diff --git a/src/lib/components/content/ReplyContext.svelte b/src/lib/components/content/ReplyContext.svelte
index 4c89b4e..87a9e89 100644
--- a/src/lib/components/content/ReplyContext.svelte
+++ b/src/lib/components/content/ReplyContext.svelte
@@ -4,16 +4,20 @@
   import { relayManager } from '../../services/nostr/relay-manager.js';
   import { stripMarkdown } from '../../services/text-utils.js';
   import { KIND } from '../../types/kind-lookup.js';
+  import { getEventLink } from '../../services/event-links.js';
+  import { goto } from '$app/navigation';
+  import IconButton from '../ui/IconButton.svelte';
 
   interface Props {
     parentEvent?: NostrEvent; // Optional - if not provided, will load by parentEventId
     parentEventId?: string; // Optional - used to load parent if not provided
+    parentEventTagType?: 'e' | 'E' | 'a' | 'A' | 'i' | 'I' | 'q'; // Tag type for loading the event
     targetId?: string; // Optional ID to scroll to (defaults to parent event ID)
     onParentLoaded?: (event: NostrEvent) => void; // Callback when parent is loaded
     onOpenEvent?: (event: NostrEvent) => void; // Callback to open event in drawer
   }
 
-  let { parentEvent: providedParentEvent, parentEventId, targetId, onParentLoaded, onOpenEvent }: Props = $props();
+  let { parentEvent: providedParentEvent, parentEventId, parentEventTagType, targetId, onParentLoaded, onOpenEvent }: Props = $props();
 
   let loadedParentEvent = $state<NostrEvent | null>(null);
   let loadingParent = $state(false);
@@ -31,31 +35,73 @@
       return;
     }
     
-    // Determine which event ID we need to load
-    const eventIdToLoad = parentEventId || parentEvent?.id;
+    // Only use parentEventId prop, not the derived parentEvent.id
+    // This prevents reactive loops
+    const eventIdToLoad = parentEventId;
     
     // If no provided parent event and we have an ID, try to load it
-    // Only load if we haven't already tried to load this ID
+    // Only load if we haven't already tried to load this ID and we don't have a loaded event
     if (eventIdToLoad && !loadedParentEvent && !loadingParent && lastLoadAttemptId !== eventIdToLoad) {
       loadParentEvent(eventIdToLoad);
     }
   });
 
-  async function loadParentEvent(eventId: string) {
-    if (!eventId || loadingParent || lastLoadAttemptId === eventId) return;
+  async function loadParentEvent(eventIdOrRef: string) {
+    if (!eventIdOrRef || loadingParent || lastLoadAttemptId === eventIdOrRef) return;
 
-    lastLoadAttemptId = eventId;
+    lastLoadAttemptId = eventIdOrRef;
     loadingParent = true;
     try {
       const relays = relayManager.getFeedReadRelays();
-      const events = await nostrClient.fetchEvents(
-        [{ kinds: [KIND.SHORT_TEXT_NOTE], ids: [eventId] }],
-        relays,
-        { useCache: true, cacheResults: true }
-      );
+      let events: NostrEvent[] = [];
+      
+      // Handle different tag types
+      if (parentEventTagType === 'a' || parentEventTagType === 'A') {
+        // Parameterized replaceable event: format is "kind:pubkey:d-tag"
+        const parts = eventIdOrRef.split(':');
+        if (parts.length === 3) {
+          const kind = parseInt(parts[0], 10);
+          const pubkey = parts[1];
+          const dTag = parts[2];
+          
+          if (!isNaN(kind) && pubkey && dTag) {
+            events = await nostrClient.fetchEvents(
+              [{ kinds: [kind], authors: [pubkey], '#d': [dTag], limit: 1 }],
+              relays,
+              { useCache: true, cacheResults: true }
+            );
+          }
+        }
+      } else if (parentEventTagType === 'i' || parentEventTagType === 'I') {
+        // Identifier reference: format is "kind:pubkey:identifier"
+        const parts = eventIdOrRef.split(':');
+        if (parts.length === 3) {
+          const kind = parseInt(parts[0], 10);
+          const pubkey = parts[1];
+          const identifier = parts[2];
+          
+          if (!isNaN(kind) && pubkey && identifier) {
+            // For identifier tags, try to fetch by kind, author, and identifier
+            // The identifier might be in a d-tag or other tag
+            events = await nostrClient.fetchEvents(
+              [{ kinds: [kind], authors: [pubkey], '#d': [identifier], limit: 1 }],
+              relays,
+              { useCache: true, cacheResults: true }
+            );
+          }
+        }
+      } else {
+        // Regular event ID (e, E, q tags): hex event ID
+        // Try to fetch by ID across all kinds
+        events = await nostrClient.fetchEvents(
+          [{ ids: [eventIdOrRef], limit: 1 }],
+          relays,
+          { useCache: true, cacheResults: true }
+        );
+      }
       
       // Only update if this is still the event we're trying to load
-      if (lastLoadAttemptId === eventId && events.length > 0) {
+      if (lastLoadAttemptId === eventIdOrRef && events.length > 0) {
         loadedParentEvent = events[0];
         if (onParentLoaded && typeof onParentLoaded === 'function') {
           onParentLoaded(loadedParentEvent);
@@ -65,7 +111,7 @@
       console.error('Error loading parent event:', error);
     } finally {
       // Only clear loading state if this is still the current load
-      if (lastLoadAttemptId === eventId) {
+      if (lastLoadAttemptId === eventIdOrRef) {
       loadingParent = false;
       }
     }
@@ -85,25 +131,66 @@
 <div
   class="reply-context mb-2 p-2 bg-fog-highlight dark:bg-fog-dark-highlight rounded text-xs text-fog-text-light dark:text-fog-dark-text-light"
 >
-  <span class="font-semibold">Replying to:</span> 
-  {#if loadingParent}
-    <span class="opacity-70">Loading...</span>
-  {:else if parentEvent}
-    {getParentPreview()}
-  {:else}
-    <span class="opacity-70">Parent event not found</span>
+  <div class="reply-context-content">
+    <span class="font-semibold">Replying to:</span> 
+    {#if loadingParent}
+      <span class="opacity-70">Loading...</span>
+    {:else if parentEvent}
+      <span class="reply-preview">{getParentPreview()}</span>
+    {:else}
+      <span class="opacity-70">Parent event not found</span>
+    {/if}
+  </div>
+  {#if parentEvent}
+    <div class="reply-context-actions">
+      <IconButton 
+        icon="eye" 
+        label="View original post" 
+        size={14}
+        onclick={() => {
+          goto(getEventLink(parentEvent!));
+        }}
+      />
+    </div>
   {/if}
 </div>
 
 <style>
   .reply-context {
     border-left: 2px solid var(--fog-accent, #64748b);
+    display: flex;
+    align-items: center;
+    justify-content: space-between;
+    gap: 0.75rem;
   }
 
   :global(.dark) .reply-context {
     border-left-color: var(--fog-dark-accent, #64748b);
   }
 
+  .reply-context-content {
+    flex: 1;
+    min-width: 0;
+    display: flex;
+    align-items: center;
+    gap: 0.5rem;
+    flex-wrap: wrap;
+  }
+
+  .reply-preview {
+    flex: 1;
+    min-width: 0;
+    overflow: hidden;
+    text-overflow: ellipsis;
+    white-space: nowrap;
+  }
+
+  .reply-context-actions {
+    flex-shrink: 0;
+    display: flex;
+    align-items: center;
+  }
+
   :global(.highlight-parent) {
     outline: 2px solid var(--fog-accent, #64748b);
     outline-offset: 2px;
diff --git a/src/lib/components/content/RichTextEditor.svelte b/src/lib/components/content/RichTextEditor.svelte
index 208ebb4..0efe699 100644
--- a/src/lib/components/content/RichTextEditor.svelte
+++ b/src/lib/components/content/RichTextEditor.svelte
@@ -16,6 +16,7 @@
     uploadContext?: string; // For logging purposes
     onValueChange?: (value: string) => void;
     onFilesUploaded?: (files: Array<{ url: string; imetaTag: string[] }>) => void;
+    onPublish?: () => void; // Called when CTRL+ENTER is pressed
   }
 
   let {
@@ -26,7 +27,8 @@
     showToolbar = true,
     uploadContext = 'RichTextEditor',
     onValueChange,
-    onFilesUploaded
+    onFilesUploaded,
+    onPublish
   }: Props = $props();
 
   let textareaRef: HTMLTextAreaElement | null = $state(null);
@@ -156,6 +158,13 @@
         onValueChange(e.currentTarget.value);
       }
     }}
+    onkeydown={(e) => {
+      // CTRL+ENTER or CMD+ENTER to publish
+      if ((e.ctrlKey || e.metaKey) && e.key === 'Enter' && onPublish && !disabled) {
+        e.preventDefault();
+        onPublish();
+      }
+    }}
   ></textarea>
   
   {#if textareaRef}
diff --git a/src/lib/components/write/CreateEventForm.svelte b/src/lib/components/write/CreateEventForm.svelte
index 3702dfe..20111d0 100644
--- a/src/lib/components/write/CreateEventForm.svelte
+++ b/src/lib/components/write/CreateEventForm.svelte
@@ -517,6 +517,7 @@
           showToolbar={true}
           uploadContext="CreateEventForm"
           onFilesUploaded={handleFilesUploaded}
+          onPublish={publish}
         />
         
         <div class="content-buttons">
diff --git a/src/lib/modules/comments/CommentForm.svelte b/src/lib/modules/comments/CommentForm.svelte
index 21edebd..baed401 100644
--- a/src/lib/modules/comments/CommentForm.svelte
+++ b/src/lib/modules/comments/CommentForm.svelte
@@ -375,6 +375,7 @@
     showToolbar={showGifButton}
     uploadContext="CommentForm"
     onFilesUploaded={handleFilesUploaded}
+    onPublish={publish}
   />
 
   <div class="flex items-center justify-between mt-2 comment-form-actions">
diff --git a/src/lib/modules/discussions/DiscussionList.svelte b/src/lib/modules/discussions/DiscussionList.svelte
index 4834234..d64936f 100644
--- a/src/lib/modules/discussions/DiscussionList.svelte
+++ b/src/lib/modules/discussions/DiscussionList.svelte
@@ -118,6 +118,10 @@
       
       // Only reload if not already loading
       if (!isLoading) {
+        // If showOlder changed, also reload from cache to get older threads
+        if (currentShowOlder !== prevShowOlder) {
+          loadCachedThreads();
+        }
         loadAllData();
       }
     }
diff --git a/src/lib/modules/feed/FeedPage.svelte b/src/lib/modules/feed/FeedPage.svelte
index d1c4af4..3a4e78b 100644
--- a/src/lib/modules/feed/FeedPage.svelte
+++ b/src/lib/modules/feed/FeedPage.svelte
@@ -7,6 +7,8 @@
   import { onMount } from 'svelte';
   import { KIND, getFeedKinds, getKindInfo } from '../../types/kind-lookup.js';
   import { getRecentFeedEvents } from '../../services/cache/event-cache.js';
+  import { keyboardShortcuts } from '../../services/keyboard-shortcuts.js';
+  import { browser } from '$app/environment';
 
   interface Props {
     singleRelay?: string;
@@ -467,6 +469,39 @@
       });
     }, 50);
     
+    // Register j/k navigation shortcuts
+    if (browser) {
+      const unregisterJ = keyboardShortcuts.register('j', (e) => {
+        if (document.activeElement?.tagName === 'INPUT' || document.activeElement?.tagName === 'TEXTAREA' || document.activeElement?.isContentEditable) {
+          return; // Don't interfere with typing
+        }
+        e.preventDefault();
+        navigateToNextPost();
+        return false;
+      });
+      
+      const unregisterK = keyboardShortcuts.register('k', (e) => {
+        if (document.activeElement?.tagName === 'INPUT' || document.activeElement?.tagName === 'TEXTAREA' || document.activeElement?.isContentEditable) {
+          return; // Don't interfere with typing
+        }
+        e.preventDefault();
+        navigateToPreviousPost();
+        return false;
+      });
+      
+      return () => {
+        clearTimeout(initTimeout);
+        isMounted = false;
+        loadInProgress = false;
+        if (subscriptionId) {
+          nostrClient.unsubscribe(subscriptionId);
+          subscriptionId = null;
+        }
+        unregisterJ();
+        unregisterK();
+      };
+    }
+    
     return () => {
       clearTimeout(initTimeout);
       isMounted = false;
@@ -477,6 +512,26 @@
       }
     };
   });
+  
+  function navigateToNextPost() {
+    const posts = Array.from(document.querySelectorAll('[data-post-id]'));
+    const currentIndex = posts.findIndex(p => p === document.activeElement || p.contains(document.activeElement));
+    const nextIndex = currentIndex < posts.length - 1 ? currentIndex + 1 : 0;
+    if (posts[nextIndex]) {
+      (posts[nextIndex] as HTMLElement).focus();
+      posts[nextIndex].scrollIntoView({ behavior: 'smooth', block: 'nearest' });
+    }
+  }
+  
+  function navigateToPreviousPost() {
+    const posts = Array.from(document.querySelectorAll('[data-post-id]'));
+    const currentIndex = posts.findIndex(p => p === document.activeElement || p.contains(document.activeElement));
+    const prevIndex = currentIndex > 0 ? currentIndex - 1 : posts.length - 1;
+    if (posts[prevIndex]) {
+      (posts[prevIndex] as HTMLElement).focus();
+      posts[prevIndex].scrollIntoView({ behavior: 'smooth', block: 'nearest' });
+    }
+  }
 
 </script>
 
diff --git a/src/lib/modules/feed/FeedPost.svelte b/src/lib/modules/feed/FeedPost.svelte
index 2bd2bdd..a0d89ed 100644
--- a/src/lib/modules/feed/FeedPost.svelte
+++ b/src/lib/modules/feed/FeedPost.svelte
@@ -23,6 +23,7 @@
   import { goto } from '$app/navigation';
   import IconButton from '../../components/ui/IconButton.svelte';
   import { page } from '$app/stores';
+  import { keyboardShortcuts } from '../../services/keyboard-shortcuts.js';
 
   interface Props {
     post: NostrEvent;
@@ -50,6 +51,34 @@
   // Reply state
   let showReplyForm = $state(false);
   
+  // Keyboard shortcuts - register when component is focused
+  let isFocused = $state(false);
+  
+  onMount(() => {
+    // Register keyboard shortcuts for this post when it's focused
+    const unregisterShortcuts = keyboardShortcuts.register('r', (e) => {
+      if (isFocused && isLoggedIn && !showReplyForm) {
+        e.preventDefault();
+        showReplyForm = true;
+        return false;
+      }
+    });
+    
+    const unregisterZap = keyboardShortcuts.register('z', (e) => {
+      if (isFocused && isLoggedIn) {
+        e.preventDefault();
+        // Trigger zap - we'll need to expose a method or use an event
+        // For now, we'll need to check if ZapButton is available
+        return false;
+      }
+    });
+    
+    return () => {
+      unregisterShortcuts();
+      unregisterZap();
+    };
+  });
+  
   // Media kinds that should auto-render media (except on /feed)
   const MEDIA_KINDS: number[] = [KIND.PICTURE_NOTE, KIND.VIDEO_NOTE, KIND.SHORT_VIDEO_NOTE, KIND.VOICE_NOTE, KIND.VOICE_REPLY];
   const isMediaKind = $derived(MEDIA_KINDS.includes(post.kind));
@@ -457,15 +486,64 @@
   }
 
   function isReply(): boolean {
-    return post.tags.some((t) => t[0] === 'e' && t[1] !== post.id);
+    // Check for all event reference tags: e, E, a, A, i, I, q
+    return post.tags.some((t) => {
+      const tagName = t[0];
+      if (tagName === 'e' || tagName === 'E' || tagName === 'q') {
+        return t[1] && t[1] !== post.id;
+      }
+      if (tagName === 'a' || tagName === 'A' || tagName === 'i' || tagName === 'I') {
+        return t[1] && t[1].includes(':');
+      }
+      return false;
+    });
   }
 
   function getReplyEventId(): string | null {
-    const replyTag = post.tags.find((t) => t[0] === 'e' && t[3] === 'reply');
-    if (replyTag) return replyTag[1];
+    // Priority order: e/E (reply), q (quote), a/A (parameterized), i/I (identifier)
+    
+    // 1. Check for e/E tags (NIP-10 replies)
+    const replyTag = post.tags.find((t) => (t[0] === 'e' || t[0] === 'E') && t[3] === 'reply');
+    if (replyTag && replyTag[1]) return replyTag[1];
+    
     const rootId = getRootEventId();
-    const eTag = post.tags.find((t) => t[0] === 'e' && t[1] !== rootId && t[1] !== post.id);
-    return eTag?.[1] || null;
+    const eTag = post.tags.find((t) => (t[0] === 'e' || t[0] === 'E') && t[1] && t[1] !== rootId && t[1] !== post.id);
+    if (eTag && eTag[1]) return eTag[1];
+    
+    // 2. Check for q tag (quoted event)
+    const qTag = post.tags.find((t) => t[0] === 'q' && t[1]);
+    if (qTag && qTag[1]) return qTag[1];
+    
+    // 3. Check for a/A tags (parameterized replaceable events)
+    const aTag = post.tags.find((t) => (t[0] === 'a' || t[0] === 'A') && t[1]);
+    if (aTag && aTag[1]) return aTag[1];
+    
+    // 4. Check for i/I tags (identifier references)
+    const iTag = post.tags.find((t) => (t[0] === 'i' || t[0] === 'I') && t[1]);
+    if (iTag && iTag[1]) return iTag[1];
+    
+    return null;
+  }
+  
+  function getReplyTagType(): 'e' | 'E' | 'a' | 'A' | 'i' | 'I' | 'q' | null {
+    // Return the tag type for the reply, in priority order
+    const replyTag = post.tags.find((t) => (t[0] === 'e' || t[0] === 'E') && t[3] === 'reply');
+    if (replyTag) return replyTag[0] as 'e' | 'E';
+    
+    const rootId = getRootEventId();
+    const eTag = post.tags.find((t) => (t[0] === 'e' || t[0] === 'E') && t[1] && t[1] !== rootId && t[1] !== post.id);
+    if (eTag) return eTag[0] as 'e' | 'E';
+    
+    const qTag = post.tags.find((t) => t[0] === 'q' && t[1]);
+    if (qTag) return 'q';
+    
+    const aTag = post.tags.find((t) => (t[0] === 'a' || t[0] === 'A') && t[1]);
+    if (aTag) return aTag[0] as 'a' | 'A';
+    
+    const iTag = post.tags.find((t) => (t[0] === 'i' || t[0] === 'I') && t[1]);
+    if (iTag) return iTag[0] as 'i' | 'I';
+    
+    return null;
   }
 
   function getRootEventId(): string | null {
@@ -665,6 +743,24 @@
 
 </script>
 
+<div
+  tabindex="0"
+  role="button"
+  aria-label="Post by {post.pubkey.slice(0, 8)}"
+  onfocus={() => isFocused = true}
+  onblur={() => isFocused = false}
+  onkeydown={(e) => {
+    // Handle shortcuts when post is focused
+    if (e.key === 'r' && isLoggedIn && !showReplyForm) {
+      e.preventDefault();
+      showReplyForm = true;
+    } else if (e.key === 'Enter' && !showReplyForm) {
+      // Enter to view full event
+      e.preventDefault();
+      goto(getEventLink(post));
+    }
+  }}
+>
 <article 
   bind:this={cardElement}
   class="Feed-post" 
@@ -679,6 +775,7 @@
       <ReplyContext 
         parentEvent={providedParentEvent || undefined} 
         parentEventId={getReplyEventId() || undefined}
+        parentEventTagType={getReplyTagType() || undefined}
         targetId={providedParentEvent ? `event-${providedParentEvent.id}` : undefined}
       />
     {/if}
@@ -790,6 +887,16 @@
       </h2>
     {/if}
 
+    <!-- Show reply-to blurb in feed view -->
+    {#if isReply()}
+      <ReplyContext 
+        parentEvent={providedParentEvent || undefined} 
+        parentEventId={getReplyEventId() || undefined}
+        parentEventTagType={getReplyTagType() || undefined}
+        targetId={providedParentEvent ? `event-${providedParentEvent.id}` : undefined}
+      />
+    {/if}
+
     <!-- Show referenced event preview in feed view -->
     <ReferencedEventPreview event={post} preloadedReferencedEvent={preloadedReferencedEvent} />
 
@@ -799,7 +906,7 @@
     {/if}
 
     <div bind:this={contentElement} class="post-content mb-2" class:collapsed-content={!fullView && shouldCollapse && !isExpanded}>
-      {#if shouldAutoRenderMedia}
+      {#if shouldAutoRenderMedia && (post.content && post.content.trim())}
         <MediaAttachments event={post} forceRender={isMediaKind} />
       {/if}
       <p class="text-fog-text dark:text-fog-dark-text whitespace-pre-wrap word-wrap">
@@ -935,6 +1042,7 @@
   </div>
   {/if}
 </article>
+</div>
 
 {#if isLoggedIn && showReplyForm}
   <div class="reply-form-container mb-4">
@@ -1178,4 +1286,19 @@
     background-color: rgba(255, 255, 0, 0.2);
   }
 
+  /* Focusable wrapper for keyboard navigation */
+  div[role="button"] {
+    outline: none;
+    cursor: default;
+  }
+
+  div[role="button"]:focus {
+    outline: 2px solid var(--fog-accent, #64748b);
+    outline-offset: 2px;
+  }
+
+  :global(.dark) div[role="button"]:focus {
+    outline-color: var(--fog-dark-accent, #94a3b8);
+  }
+
 </style>
diff --git a/src/lib/services/keyboard-shortcuts.ts b/src/lib/services/keyboard-shortcuts.ts
new file mode 100644
index 0000000..34c2fde
--- /dev/null
+++ b/src/lib/services/keyboard-shortcuts.ts
@@ -0,0 +1,154 @@
+/**
+ * Keyboard shortcuts service
+ * Provides global keyboard shortcuts for the application
+ */
+
+export interface KeyboardShortcut {
+  key: string;
+  ctrl?: boolean;
+  shift?: boolean;
+  alt?: boolean;
+  meta?: boolean;
+  description: string;
+  category: 'navigation' | 'actions' | 'forms' | 'general';
+}
+
+export const KEYBOARD_SHORTCUTS: KeyboardShortcut[] = [
+  // Navigation
+  { key: 'j', description: 'Navigate to next post/thread', category: 'navigation' },
+  { key: 'k', description: 'Navigate to previous post/thread', category: 'navigation' },
+  { key: '/', description: 'Focus search box', category: 'navigation' },
+  { key: 'Escape', description: 'Close modals/drawers', category: 'navigation' },
+  
+  // Actions
+  { key: 'r', description: 'Reply to current post/thread', category: 'actions' },
+  { key: 'z', description: 'Zap current post/thread', category: 'actions' },
+  { key: 'u', description: 'Upvote current post/thread', category: 'actions' },
+  { key: 'd', description: 'Downvote current post/thread', category: 'actions' },
+  { key: 'b', description: 'Bookmark current post/thread', category: 'actions' },
+  
+  // Forms
+  { key: 'Enter', ctrl: true, description: 'Submit reply/form (when in textarea)', category: 'forms' },
+  { key: 'Enter', meta: true, description: 'Submit reply/form (Mac: Cmd+Enter)', category: 'forms' },
+  
+  // General
+  { key: '?', description: 'Show keyboard shortcuts help', category: 'general' },
+];
+
+export type ShortcutHandler = (event: KeyboardEvent) => void | boolean;
+
+class KeyboardShortcutsManager {
+  private handlers: Map<string, Set<ShortcutHandler>> = new Map();
+  private enabled = true;
+  private currentContext: string | null = null;
+
+  constructor() {
+    if (typeof window !== 'undefined') {
+      window.addEventListener('keydown', this.handleKeyDown.bind(this));
+    }
+  }
+
+  private getShortcutKey(event: KeyboardEvent): string {
+    const parts: string[] = [];
+    if (event.ctrlKey) parts.push('ctrl');
+    if (event.shiftKey) parts.push('shift');
+    if (event.altKey) parts.push('alt');
+    if (event.metaKey) parts.push('meta');
+    parts.push(event.key.toLowerCase());
+    return parts.join('+');
+  }
+
+  private handleKeyDown(event: KeyboardEvent) {
+    if (!this.enabled) return;
+    
+    // Don't trigger shortcuts when typing in inputs, textareas, or contenteditable
+    const target = event.target as HTMLElement;
+    if (
+      target.tagName === 'INPUT' ||
+      target.tagName === 'TEXTAREA' ||
+      target.isContentEditable ||
+      target.closest('[contenteditable="true"]')
+    ) {
+      // Allow CTRL+ENTER and CMD+ENTER in textareas
+      if (
+        (event.ctrlKey || event.metaKey) &&
+        event.key === 'Enter' &&
+        target.tagName === 'TEXTAREA'
+      ) {
+        // Let the textarea handle it
+        return;
+      }
+      // Allow ? to show help from anywhere
+      if (event.key === '?' && !event.ctrlKey && !event.metaKey && !event.altKey) {
+        // Continue to process
+      } else {
+        return;
+      }
+    }
+
+    const shortcutKey = this.getShortcutKey(event);
+    const handlers = this.handlers.get(shortcutKey);
+    
+    if (handlers && handlers.size > 0) {
+      for (const handler of handlers) {
+        const result = handler(event);
+        if (result === false) {
+          // Handler explicitly prevented default
+          event.preventDefault();
+          event.stopPropagation();
+          return;
+        }
+        if (result !== undefined) {
+          // Handler returned a value, assume it handled the event
+          event.preventDefault();
+          event.stopPropagation();
+          return;
+        }
+      }
+    }
+  }
+
+  /**
+   * Register a keyboard shortcut handler
+   * @param shortcut The shortcut key combination (e.g., 'ctrl+k', 'j', 'shift+r')
+   * @param handler The handler function
+   * @returns A function to unregister the handler
+   */
+  register(shortcut: string, handler: ShortcutHandler): () => void {
+    const normalized = shortcut.toLowerCase();
+    if (!this.handlers.has(normalized)) {
+      this.handlers.set(normalized, new Set());
+    }
+    this.handlers.get(normalized)!.add(handler);
+
+    return () => {
+      const handlers = this.handlers.get(normalized);
+      if (handlers) {
+        handlers.delete(handler);
+        if (handlers.size === 0) {
+          this.handlers.delete(normalized);
+        }
+      }
+    };
+  }
+
+  /**
+   * Enable or disable keyboard shortcuts globally
+   */
+  setEnabled(enabled: boolean) {
+    this.enabled = enabled;
+  }
+
+  /**
+   * Set the current context (for context-specific shortcuts)
+   */
+  setContext(context: string | null) {
+    this.currentContext = context;
+  }
+
+  getContext(): string | null {
+    return this.currentContext;
+  }
+}
+
+export const keyboardShortcuts = new KeyboardShortcutsManager();
diff --git a/src/routes/discussions/+page.svelte b/src/routes/discussions/+page.svelte
index 41de738..0decbc3 100644
--- a/src/routes/discussions/+page.svelte
+++ b/src/routes/discussions/+page.svelte
@@ -29,8 +29,8 @@
     }
   }
 
-  onMount(async () => {
-    await nostrClient.initialize();
+  onMount(() => {
+    nostrClient.initialize().catch(console.error);
   });
 </script>
 
@@ -129,17 +129,10 @@
 
   .discussions-header-sticky {
     padding: 0 1rem;
-    position: sticky;
-    top: 0;
-    background: var(--fog-bg, #ffffff);
-    background-color: var(--fog-bg, #ffffff);
-    z-index: 10;
     padding-top: 1rem;
     padding-bottom: 1rem;
     margin-bottom: 1rem;
     border-bottom: 1px solid var(--fog-border, #e5e7eb);
-    backdrop-filter: none;
-    opacity: 1;
   }
 
   :global(.dark) .discussions-header-sticky {
diff --git a/src/routes/settings/+page.svelte b/src/routes/settings/+page.svelte
index 991a6b1..82d3272 100644
--- a/src/routes/settings/+page.svelte
+++ b/src/routes/settings/+page.svelte
@@ -5,6 +5,7 @@
   import { shouldIncludeClientTag, setIncludeClientTag } from '../../lib/services/client-tag-preference.js';
   import { goto } from '$app/navigation';
   import Icon from '../../lib/components/ui/Icon.svelte';
+  import { KEYBOARD_SHORTCUTS } from '../../lib/services/keyboard-shortcuts.js';
 
   type TextSize = 'small' | 'medium' | 'large';
   type LineSpacing = 'tight' | 'normal' | 'loose';
@@ -287,6 +288,45 @@
         When enabled, published events will include a client tag (NIP-89) identifying aitherboard as the source.
       </p>
     </div>
+
+    <!-- Keyboard Shortcuts -->
+    <div class="preference-section bg-fog-post dark:bg-fog-dark-post border border-fog-border dark:border-fog-dark-border p-4 rounded">
+      <div class="preference-label mb-3">
+        <span class="font-semibold text-fog-text dark:text-fog-dark-text">Keyboard Shortcuts</span>
+      </div>
+      <div class="shortcuts-list">
+        {#each ['navigation', 'actions', 'forms', 'general'] as category}
+          {@const shortcuts = KEYBOARD_SHORTCUTS.filter(s => s.category === category)}
+          {#if shortcuts.length > 0}
+            <div class="shortcuts-category">
+              <h3 class="shortcuts-category-title">{category.charAt(0).toUpperCase() + category.slice(1)}</h3>
+              <div class="shortcuts-items">
+                {#each shortcuts as shortcut}
+                  <div class="shortcut-item">
+                    <div class="shortcut-keys">
+                      {#if shortcut.ctrl}
+                        <kbd>Ctrl</kbd>+
+                      {/if}
+                      {#if shortcut.meta}
+                        <kbd>Cmd</kbd>+
+                      {/if}
+                      {#if shortcut.shift}
+                        <kbd>Shift</kbd>+
+                      {/if}
+                      {#if shortcut.alt}
+                        <kbd>Alt</kbd>+
+                      {/if}
+                      <kbd>{shortcut.key === ' ' ? 'Space' : shortcut.key.toUpperCase()}</kbd>
+                    </div>
+                    <div class="shortcut-description">{shortcut.description}</div>
+                  </div>
+                {/each}
+              </div>
+            </div>
+          {/if}
+        {/each}
+      </div>
+    </div>
   </div>
   </div>
 </main>
@@ -427,4 +467,86 @@
     color: white;
     border-color: var(--fog-dark-accent, #94a3b8);
   }
+
+  .shortcuts-list {
+    display: flex;
+    flex-direction: column;
+    gap: 1.5rem;
+  }
+
+  .shortcuts-category {
+    display: flex;
+    flex-direction: column;
+    gap: 0.75rem;
+  }
+
+  .shortcuts-category-title {
+    margin: 0;
+    font-size: 1rem;
+    font-weight: 600;
+    color: var(--fog-text, #475569);
+    text-transform: capitalize;
+  }
+
+  :global(.dark) .shortcuts-category-title {
+    color: var(--fog-dark-text, #cbd5e1);
+  }
+
+  .shortcuts-items {
+    display: flex;
+    flex-direction: column;
+    gap: 0.5rem;
+  }
+
+  .shortcut-item {
+    display: flex;
+    align-items: center;
+    gap: 1rem;
+    padding: 0.5rem;
+    border-radius: 0.25rem;
+  }
+
+  .shortcut-item:hover {
+    background: var(--fog-highlight, #f3f4f6);
+  }
+
+  :global(.dark) .shortcut-item:hover {
+    background: var(--fog-dark-highlight, #374151);
+  }
+
+  .shortcut-keys {
+    display: flex;
+    align-items: center;
+    gap: 0.25rem;
+    flex-shrink: 0;
+    min-width: 120px;
+  }
+
+  .shortcut-keys kbd {
+    padding: 0.25rem 0.5rem;
+    font-size: 0.75rem;
+    font-family: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;
+    background: var(--fog-highlight, #f3f4f6);
+    border: 1px solid var(--fog-border, #e5e7eb);
+    border-radius: 0.25rem;
+    color: var(--fog-text, #475569);
+    font-weight: 600;
+    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
+  }
+
+  :global(.dark) .shortcut-keys kbd {
+    background: var(--fog-dark-highlight, #374151);
+    border-color: var(--fog-dark-border, #475569);
+    color: var(--fog-dark-text, #cbd5e1);
+    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
+  }
+
+  .shortcut-description {
+    color: var(--fog-text, #475569);
+    font-size: 0.875rem;
+  }
+
+  :global(.dark) .shortcut-description {
+    color: var(--fog-dark-text, #cbd5e1);
+  }
 </style>