diff --git a/README.md b/README.md
index c90081b9..73a3eed8 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,10 @@
 # Flotilla
 
 A discord-like nostr client. WIP.
+
+# Notes
+
+- Privacy, migrations, and content replication
+  - Allow relays to strip signatures based on auth'd user
+  - Federated relays/admins can get signatures
+  - Other users have to opt-in to using the relay in trusted mode
diff --git a/src/app/commands.ts b/src/app/commands.ts
index ddfe9e0b..4ec27628 100644
--- a/src/app/commands.ts
+++ b/src/app/commands.ts
@@ -14,7 +14,7 @@ import {
   loadMutes,
   followsByPubkey,
 } from "@welshman/app"
-import {MEMBERSHIPS, INDEXER_RELAYS} from "@app/state"
+import {ROOM, MEMBERSHIPS, INDEXER_RELAYS} from "@app/state"
 
 // Utils
 
@@ -95,9 +95,9 @@ export const updateList = async (kind: number, modifyTags: ModifyTags) => {
 export const addSpaceMembership = (url: string) =>
   updateList(MEMBERSHIPS, (tags: string[][]) => uniqBy(t => t.join(""), [...tags, ["r", url]]))
 
-export const addRoomMembership = (url: string, topic: string) =>
+export const addRoomMembership = (url: string, room: string) =>
   updateList(MEMBERSHIPS, (tags: string[][]) =>
-    uniqBy(t => t.join(""), [...tags, ["t", topic, url]]),
+    uniqBy(t => t.join(""), [...tags, [ROOM, room, url]]),
   )
 
 export const removeSpaceMembership = (url: string) =>
@@ -105,5 +105,6 @@ export const removeSpaceMembership = (url: string) =>
     tags.filter(t => !equals(["r", url], t) && t[2] !== url),
   )
 
-export const removeRoomMembership = (url: string, topic: string) =>
-  updateList(MEMBERSHIPS, (tags: string[][]) => tags.filter(t => !equals(["t", topic, url], t)))
+export const removeRoomMembership = (url: string, room: string) =>
+  updateList(MEMBERSHIPS, (tags: string[][]) => tags.filter(t => !equals([ROOM, room, url], t)))
+
diff --git a/src/app/components/ChatCompose.svelte b/src/app/components/ChatCompose.svelte
index be554ee4..d3de38ce 100644
--- a/src/app/components/ChatCompose.svelte
+++ b/src/app/components/ChatCompose.svelte
@@ -11,10 +11,10 @@
   import Button from "@lib/components/Button.svelte"
   import {makeMention, makeIMeta} from "@app/commands"
   import {getChatEditorOptions, addFile} from "@app/editor"
-  import {MESSAGE} from "@app/state"
+  import {ROOM, MESSAGE, GENERAL} from "@app/state"
 
   export let url
-  export let topic = ""
+  export let room = GENERAL
 
   const uploading = writable(false)
 
@@ -22,7 +22,6 @@
 
   const sendMessage = () => {
     const json = $editor.getJSON()
-    const topicTags = topic ? [["t", topic]] : []
     const mentionTags = findNodes(NProfileExtension.name, json).map(m =>
       makeMention(m.attrs!.pubkey, m.attrs!.relays),
     )
@@ -32,7 +31,7 @@
 
     const event = createEvent(MESSAGE, {
       content: $editor.getText(),
-      tags: [["-"], ...topicTags, ...mentionTags, ...imetaTags],
+      tags: [[ROOM, room], ...mentionTags, ...imetaTags],
     })
 
     publishThunk(makeThunk({event, relays: [url]}))
diff --git a/src/app/components/ChatMessage.svelte b/src/app/components/ChatMessage.svelte
index beed9543..61a12ee3 100644
--- a/src/app/components/ChatMessage.svelte
+++ b/src/app/components/ChatMessage.svelte
@@ -16,7 +16,6 @@
   } from "@welshman/app"
   import type {PublishStatusData} from "@welshman/app"
   import {
-    GROUP_REPLY,
     REACTION,
     ZAP_RESPONSE,
     displayRelayUrl,
@@ -27,7 +26,7 @@
   import Icon from "@lib/components/Icon.svelte"
   import Button from "@lib/components/Button.svelte"
   import Avatar from "@lib/components/Avatar.svelte"
-  import {deriveEvent, displayReaction} from "@app/state"
+  import {REPLY, deriveEvent, displayReaction} from "@app/state"
   import {getChatViewOptions} from "@app/editor"
 
   export let event: TrustedEvent
@@ -85,7 +84,7 @@
 </script>
 
 <div in:fly class="group relative flex flex-col gap-1 p-2 transition-colors hover:bg-base-300">
-  {#if event.kind === GROUP_REPLY}
+  {#if event.kind === REPLY}
     <div class="flex items-center gap-1 pl-12 text-xs">
       <Icon icon="arrow-right" />
       <Avatar src={$parentProfile?.picture} size={4} />
diff --git a/src/app/components/EventCreate.svelte b/src/app/components/EventCreate.svelte
index f1ca0335..36e40d83 100644
--- a/src/app/components/EventCreate.svelte
+++ b/src/app/components/EventCreate.svelte
@@ -52,7 +52,6 @@
     const event = createEvent(kind, {
       content: $editor.getText(),
       tags: [
-        ["-"],
         ["d", randomId()],
         ["title", title],
         ["location", location],
diff --git a/src/app/components/PrimaryNav.svelte b/src/app/components/PrimaryNav.svelte
index ef007025..289790fb 100644
--- a/src/app/components/PrimaryNav.svelte
+++ b/src/app/components/PrimaryNav.svelte
@@ -51,7 +51,7 @@
           class="!h-10 !w-10 border border-solid border-base-300"
           size={7} />
       </PrimaryNavItem>
-      {#each $userMembership?.topicsByUrl.keys() || [] as url (url)}
+      {#each $userMembership?.roomsByUrl.keys() || [] as url (url)}
         <PrimaryNavItem title={displayRelayUrl(url)} href={makeSpacePath(url)}>
           <SpaceAvatar {url} />
         </PrimaryNavItem>
diff --git a/src/app/components/RoomCreate.svelte b/src/app/components/RoomCreate.svelte
index 79bc5f51..b3c21f5e 100644
--- a/src/app/components/RoomCreate.svelte
+++ b/src/app/components/RoomCreate.svelte
@@ -13,9 +13,9 @@
   const back = () => history.back()
 
   const tryCreate = async () => {
-    await addRoomMembership(url, topic)
+    await addRoomMembership(url, room)
 
-    goto(makeSpacePath(url, topic))
+    goto(makeSpacePath(url, room))
   }
 
   const create = async () => {
@@ -28,7 +28,7 @@
     }
   }
 
-  let topic = ""
+  let room = ""
   let loading = false
 </script>
 
@@ -41,7 +41,7 @@
     <p slot="label">Room Name</p>
     <label class="input input-bordered flex w-full items-center gap-2" slot="input">
       <Icon icon="hashtag" />
-      <input bind:value={topic} class="grow" type="text" />
+      <input bind:value={room} class="grow" type="text" />
     </label>
   </Field>
   <div class="flex flex-row items-center justify-between gap-4">
@@ -49,7 +49,7 @@
       <Icon icon="alt-arrow-left" />
       Go back
     </Button>
-    <Button type="submit" class="btn btn-primary" disabled={!topic || loading}>
+    <Button type="submit" class="btn btn-primary" disabled={!room || loading}>
       <Spinner {loading}>Create Room</Spinner>
       <Icon icon="alt-arrow-right" />
     </Button>
diff --git a/src/app/routes.ts b/src/app/routes.ts
index f1480d3e..e6d70bd5 100644
--- a/src/app/routes.ts
+++ b/src/app/routes.ts
@@ -15,7 +15,7 @@ export const makeSpacePath = (url: string, extra = "") => {
 export const getPrimaryNavItem = ($page: Page) => $page.route?.id?.split("/")[1]
 
 export const getPrimaryNavItemIndex = ($page: Page) => {
-  const urls = Array.from(userMembership.get()?.topicsByUrl.keys() || [])
+  const urls = Array.from(userMembership.get()?.roomsByUrl.keys() || [])
 
   switch (getPrimaryNavItem($page)) {
     case "discover":
diff --git a/src/app/state.ts b/src/app/state.ts
index 0904de42..cd6646f6 100644
--- a/src/app/state.ts
+++ b/src/app/state.ts
@@ -1,7 +1,7 @@
 import {nip19} from "nostr-tools"
 import {get, derived} from "svelte/store"
 import type {Maybe} from "@welshman/lib"
-import {setContext, max, pushToMapKey, nthEq} from "@welshman/lib"
+import {setContext, nth, max, pushToMapKey, nthEq} from "@welshman/lib"
 import {
   getIdFilters,
   RELAYS,
@@ -10,7 +10,6 @@ import {
   EVENT_DATE,
   EVENT_TIME,
   getRelayTagValues,
-  getTopicTagValues,
   isShareableRelayUrl,
 } from "@welshman/util"
 import type {TrustedEvent} from "@welshman/util"
@@ -31,9 +30,13 @@ import {
 import type {SubscribeRequestWithHandlers} from "@welshman/net"
 import {deriveEvents, deriveEventsMapped, withGetter} from "@welshman/store"
 
+export const ROOM = "~"
+
+export const GENERAL = "general"
+
 export const MESSAGE = 209
 
-export const REPLY = 210
+export const REPLY = 1111
 
 export const MEMBERSHIPS = 10209
 
@@ -75,7 +78,7 @@ export const deriveEvent = (idOrAddress: string, hints: string[] = []) => {
 // Membership
 
 export type Membership = {
-  topicsByUrl: Map<string, string[]>
+  roomsByUrl: Map<string, string[]>
   event?: TrustedEvent
 }
 
@@ -84,17 +87,17 @@ export type PublishedMembership = Omit<Membership, "event"> & {
 }
 
 export const readMembership = (event: TrustedEvent): PublishedMembership => {
-  const topicsByUrl = new Map<string, string[]>()
+  const roomsByUrl = new Map<string, string[]>()
 
   for (const tag of event.tags.filter(nthEq(0, "r"))) {
-    topicsByUrl.set(tag[1], [])
+    roomsByUrl.set(tag[1], [])
   }
 
   for (const tag of event.tags.filter(nthEq(0, "t"))) {
-    pushToMapKey(topicsByUrl, tag[2], tag[1])
+    pushToMapKey(roomsByUrl, tag[2], tag[1])
   }
 
-  return {event, topicsByUrl}
+  return {event, roomsByUrl}
 }
 
 export const memberships = deriveEventsMapped<PublishedMembership>(repository, {
@@ -121,16 +124,16 @@ export const {
 // Messages
 
 export type Message = {
-  topic: string
+  room: string
   event: TrustedEvent
 }
 
 export const readMessage = (event: TrustedEvent): Maybe<Message> => {
-  const topics = getTopicTagValues(event.tags)
+  const rooms = event.tags.filter(nthEq(0, ROOM)).map(nth(1))
 
-  if (topics.length > 1) return undefined
+  if (rooms.length > 1) return undefined
 
-  return {topic: topics[0] || "", event}
+  return {room: rooms[0] || "", event}
 }
 
 export const messages = deriveEventsMapped<Message>(repository, {
@@ -144,11 +147,11 @@ export const messages = deriveEventsMapped<Message>(repository, {
 export type Chat = {
   id: string
   url: string
-  topic: string
+  room: string
   messages: Message[]
 }
 
-export const makeChatId = (url: string, topic: string) => `${url}'${topic}`
+export const makeChatId = (url: string, room: string) => `${url}'${room}`
 
 export const splitChatId = (id: string) => id.split("'")
 
@@ -157,16 +160,16 @@ export const chats = derived([trackerStore, messages], ([$tracker, $messages]) =
 
   for (const message of $messages) {
     for (const url of $tracker.getRelays(message.event.id)) {
-      const chatId = makeChatId(url, message.topic)
+      const chatId = makeChatId(url, message.room)
 
       pushToMapKey(messagesByChatId, chatId, message)
     }
   }
 
   return Array.from(messagesByChatId.entries()).map(([id, messages]) => {
-    const [url, topic] = splitChatId(id)
+    const [url, room] = splitChatId(id)
 
-    return {id, url, topic, messages}
+    return {id, url, room, messages}
   })
 })
 
@@ -179,12 +182,12 @@ export const {
   store: chats,
   getKey: chat => chat.id,
   load: (id: string, request: Partial<SubscribeRequestWithHandlers> = {}) => {
-    const [url, topic] = splitChatId(id)
+    const [url, room] = splitChatId(id)
     const chat = get(chatsById).get(id)
     const timestamps = chat?.messages.map(m => m.event.created_at) || []
     const since = Math.max(0, max(timestamps) - 3600)
 
-    return load({...request, relays: [url], filters: [{"#t": [topic], since}]})
+    return load({...request, relays: [url], filters: [{'#~': [room], since}]})
   },
 })
 
@@ -204,18 +207,18 @@ export const eventsByUrl = derived([trackerStore, events], ([$tracker, $events])
   return eventsByUrl
 })
 
-// Topics
+// Rooms
 
-export const topicsByUrl = derived(chats, $chats => {
-  const $topicsByUrl = new Map<string, string[]>()
+export const roomsByUrl = derived(chats, $chats => {
+  const $roomsByUrl = new Map<string, string[]>()
 
   for (const chat of $chats) {
-    if (chat.topic) {
-      pushToMapKey($topicsByUrl, chat.url, chat.topic)
+    if (chat.room) {
+      pushToMapKey($roomsByUrl, chat.url, chat.room)
     }
   }
 
-  return $topicsByUrl
+  return $roomsByUrl
 })
 
 // User stuff
diff --git a/src/routes/discover/+page.svelte b/src/routes/discover/+page.svelte
index 92157a6d..bb16ec1f 100644
--- a/src/routes/discover/+page.svelte
+++ b/src/routes/discover/+page.svelte
@@ -56,7 +56,7 @@
           {/if}
         </div>
       </div>
-      {#if $userMembership?.topicsByUrl.has(relay.url)}
+      {#if $userMembership?.roomsByUrl.has(relay.url)}
         <div class="center absolute flex w-full">
           <div
             class="tooltip relative left-8 top-[38px] h-5 w-5 rounded-full bg-primary"
diff --git a/src/routes/spaces/[nrelay]/+layout.svelte b/src/routes/spaces/[nrelay]/+layout.svelte
index 254f68f2..b7e81dc6 100644
--- a/src/routes/spaces/[nrelay]/+layout.svelte
+++ b/src/routes/spaces/[nrelay]/+layout.svelte
@@ -16,7 +16,7 @@
   import SpaceExit from "@app/components/SpaceExit.svelte"
   import SpaceJoin from "@app/components/SpaceJoin.svelte"
   import RoomCreate from "@app/components/RoomCreate.svelte"
-  import {userMembership, topicsByUrl, decodeNRelay, MESSAGE, REPLY} from "@app/state"
+  import {userMembership, roomsByUrl, decodeNRelay, GENERAL, MESSAGE, REPLY} from "@app/state"
   import {pushModal} from "@app/modal"
   import {makeSpacePath} from "@app/routes"
 
@@ -48,8 +48,8 @@
   let showMenu = false
 
   $: url = decodeNRelay($page.params.nrelay)
-  $: rooms = sort($userMembership?.topicsByUrl?.get(url) || [])
-  $: otherRooms = ($topicsByUrl.get(url) || []).filter(t => !rooms.includes(t))
+  $: rooms = sort($userMembership?.roomsByUrl?.get(url) || [])
+  $: otherRooms = ($roomsByUrl.get(url) || []).filter(room => !rooms.concat(GENERAL).includes(room))
 
   onMount(() => {
     const kinds = [MESSAGE, REPLY, EVENT_DATE, EVENT_TIME, CLASSIFIED]
@@ -72,7 +72,7 @@
             <ul
               transition:fly
               class="menu absolute z-popover mt-2 w-full rounded-box bg-base-100 p-2 shadow-xl">
-              {#if $userMembership?.topicsByUrl.has(url)}
+              {#if $userMembership?.roomsByUrl.has(url)}
                 <li class="text-error">
                   <Button on:click={leaveSpace}>
                     <Icon icon="exit" />
@@ -113,11 +113,11 @@
           <SecondaryNavHeader>Your Rooms</SecondaryNavHeader>
         </div>
       {/if}
-      {#each rooms as topic, i (topic)}
+      {#each rooms as room, i (room)}
         <div transition:slide={{delay: getDelay()}}>
-          <SecondaryNavItem href={makeSpacePath(url, topic)}>
+          <SecondaryNavItem href={makeSpacePath(url, room)}>
             <Icon icon="hashtag" />
-            {topic}
+            {room}
           </SecondaryNavItem>
         </div>
       {/each}
@@ -133,11 +133,11 @@
           </SecondaryNavHeader>
         </div>
       {/if}
-      {#each otherRooms as topic, i (topic)}
+      {#each otherRooms as room, i (room)}
         <div transition:slide={{delay: getDelay()}}>
-          <SecondaryNavItem href={makeSpacePath(url, topic)}>
+          <SecondaryNavItem href={makeSpacePath(url, room)}>
             <Icon icon="hashtag" />
-            {topic}
+            {room}
           </SecondaryNavItem>
         </div>
       {/each}
@@ -150,7 +150,7 @@
     </SecondaryNavSection>
   </SecondaryNav>
   <Page>
-    {#key $page.params.topic}
+    {#key $page.params.room}
       <slot />
     {/key}
   </Page>
diff --git a/src/routes/spaces/[nrelay]/[[topic]]/+page.svelte b/src/routes/spaces/[nrelay]/[[room]]/+page.svelte
similarity index 86%
rename from src/routes/spaces/[nrelay]/[[topic]]/+page.svelte
rename to src/routes/spaces/[nrelay]/[[room]]/+page.svelte
index 63dc849e..a6b728d5 100644
--- a/src/routes/spaces/[nrelay]/[[topic]]/+page.svelte
+++ b/src/routes/spaces/[nrelay]/[[room]]/+page.svelte
@@ -18,19 +18,19 @@
   import Divider from "@lib/components/Divider.svelte"
   import ChatMessage from "@app/components/ChatMessage.svelte"
   import ChatCompose from "@app/components/ChatCompose.svelte"
-  import {userMembership, decodeNRelay, makeChatId, deriveChat} from "@app/state"
+  import {userMembership, decodeNRelay, makeChatId, deriveChat, GENERAL} from "@app/state"
   import {addRoomMembership, removeRoomMembership} from "@app/commands"
 
-  const {nrelay, topic = ""} = $page.params
+  const {nrelay, room = GENERAL} = $page.params
   const url = decodeNRelay(nrelay)
-  const chat = deriveChat(makeChatId(url, topic))
+  const chat = deriveChat(makeChatId(url, room))
 
   const assertEvent = (e: any) => e as TrustedEvent
 
   let loading = true
   let elements: Element[] = []
 
-  $: membership = $userMembership?.topicsByUrl.get(url) || []
+  $: membership = $userMembership?.roomsByUrl.get(url) || []
 
   $: {
     elements = []
@@ -71,16 +71,16 @@
       class="flex min-h-12 items-center justify-between gap-4 rounded-xl bg-base-100 px-4 shadow-xl">
       <div class="flex items-center gap-2">
         <Icon icon="hashtag" />
-        <strong>{topic || "General"}</strong>
+        <strong>{room || "General"}</strong>
       </div>
-      {#if topic}
-        {#if membership.includes(topic)}
-          <Button class="btn btn-neutral btn-sm" on:click={() => removeRoomMembership(url, topic)}>
+      {#if room}
+        {#if membership.includes(room)}
+          <Button class="btn btn-neutral btn-sm" on:click={() => removeRoomMembership(url, room)}>
             <Icon icon="arrows-a-logout-2" />
             Leave Room
           </Button>
         {:else}
-          <Button class="btn btn-neutral btn-sm" on:click={() => addRoomMembership(url, topic)}>
+          <Button class="btn btn-neutral btn-sm" on:click={() => addRoomMembership(url, room)}>
             <Icon icon="login-2" />
             Join Room
           </Button>
@@ -106,5 +106,5 @@
       </Spinner>
     </p>
   </div>
-  <ChatCompose {url} {topic} />
+  <ChatCompose {url} {room} />
 </div>