diff --git a/packages/feeds/compiler.ts b/packages/feeds/compiler.ts
index 5c7c418..b1ca500 100644
--- a/packages/feeds/compiler.ts
+++ b/packages/feeds/compiler.ts
@@ -1,7 +1,7 @@
-import {uniq, flatten, pushToMapKey, intersection, ensureNumber, tryCatch, now} from '@welshman/lib'
+import {uniq, identity, flatten, pushToMapKey, intersection, ensureNumber, tryCatch, now} from '@welshman/lib'
 import type {Rumor, Filter} from '@welshman/util'
 import {Tags, intersectFilters, getAddress, getIdFilters, unionFilters} from '@welshman/util'
-import type {WOTItem, RequestItem, TagFilterMapping, ListItem, DVMItem, Scope, Feed, FeedOptions} from './core'
+import type {WOTItem, CreatedAtItem, RequestItem, TagFilterMapping, ListItem, DVMItem, Scope, Feed, FeedOptions} from './core'
 import {FeedType, getSubFeeds} from './core'
 
 export class FeedCompiler<E extends Rumor> {
@@ -22,17 +22,15 @@ export class FeedCompiler<E extends Rumor> {
         return getSubFeeds([type, ...feed] as Feed).every(f => this.canCompile(f))
       case FeedType.Address:
       case FeedType.Author:
+      case FeedType.CreatedAt:
       case FeedType.DVM:
       case FeedType.ID:
       case FeedType.Kind:
       case FeedType.List:
       case FeedType.Relay:
       case FeedType.Scope:
-      case FeedType.Since:
-      case FeedType.SinceAgo:
+      case FeedType.Search:
       case FeedType.Tag:
-      case FeedType.Until:
-      case FeedType.UntilAgo:
       case FeedType.WOT:
         return true
       default:
@@ -43,6 +41,7 @@ export class FeedCompiler<E extends Rumor> {
   async compile([type, ...feed]: Feed): Promise<RequestItem[]> {
     switch(type) {
       case FeedType.Address:      return this._compileAddresses(feed as string[])
+      case FeedType.CreatedAt:    return this._compileCreatedAt(feed as CreatedAtItem[])
       case FeedType.Author:       return this._compileFilter("authors", feed as string[])
       case FeedType.DVM:          return await this._compileDvms(feed as DVMItem[])
       case FeedType.ID:           return this._compileFilter("ids", feed as string[])
@@ -51,11 +50,8 @@ export class FeedCompiler<E extends Rumor> {
       case FeedType.List:         return await this._compileLists(feed as ListItem[])
       case FeedType.Relay:        return [{relays: feed as string[]}]
       case FeedType.Scope:        return this._compileScopes(feed as Scope[])
-      case FeedType.Since:        return this._compileFilter("since", feed[0] as number)
-      case FeedType.SinceAgo:     return this._compileFilter("since", now() - (feed[0] as number))
+      case FeedType.Search:       return this._compileSearches(feed as string[])
       case FeedType.Tag:          return this._compileFilter(feed[0] as string, feed.slice(1) as string[])
-      case FeedType.Until:        return this._compileFilter("until", feed[0] as number)
-      case FeedType.UntilAgo:     return this._compileFilter("until", now() - (feed[0] as number))
       case FeedType.Union:        return await this._compileUnion(feed as Feed[])
       case FeedType.WOT:          return this._compileWot(feed as WOTItem)
       default:
@@ -71,10 +67,38 @@ export class FeedCompiler<E extends Rumor> {
     return [{filters: [{[key]: value} as Filter]}]
   }
 
+  _compileCreatedAt(items: CreatedAtItem[]) {
+    const filters = items
+      .map(({since, until, relative}) => {
+        if (relative) {
+          if (typeof since === 'number') {
+            since = now() - since
+          }
+
+          if (typeof until === 'number') {
+            until = now() - until
+          }
+        }
+
+        if (since && until) return {since, until}
+        if (since) return {since}
+        if (until) return {until}
+
+        return null
+      })
+      .filter(identity)
+
+    return [{filters: filters as Filter[]}]
+  }
+
   _compileScopes(scopes: Scope[]) {
     return [{filters: [{authors: uniq(scopes.flatMap(this.options.getPubkeysForScope))}]}]
   }
 
+  _compileSearches(searches: string[]) {
+    return [{filters: searches.map(search => ({search}))}]
+  }
+
   _compileWot({min = 0, max = 1}) {
     return [{filters: [{authors: this.options.getPubkeysForWotRange(min, max)}]}]
   }
diff --git a/packages/feeds/core.ts b/packages/feeds/core.ts
index 3f8364a..26e0699 100644
--- a/packages/feeds/core.ts
+++ b/packages/feeds/core.ts
@@ -3,6 +3,7 @@ import type {Filter} from '@welshman/util'
 export enum FeedType {
   Address = "address",
   Author = "author",
+  CreatedAt = "created_at",
   DVM = "dvm",
   Difference = "difference",
   ID = "id",
@@ -12,13 +13,10 @@ export enum FeedType {
   WOT = "wot",
   Relay = "relay",
   Scope = "scope",
-  Since = "since",
-  SinceAgo = "since_ago",
+  Search = "search",
   SymmetricDifference = "symmetric_difference",
   Tag = "tag",
   Union = "union",
-  Until = "until",
-  UntilAgo = "until_ago",
 }
 
 export enum Scope {
@@ -55,8 +53,15 @@ export type WOTItem = {
   max?: number,
 }
 
+export type CreatedAtItem = {
+  since?: number,
+  until?: number,
+  relative?: boolean,
+}
+
 export type AddressFeed = [type: FeedType.Address, ...addresses: string[]]
 export type AuthorFeed = [type: FeedType.Author, ...pubkeys: string[]]
+export type CreatedAtFeed = [type: FeedType.CreatedAt, ...items: CreatedAtItem[]]
 export type DVMFeed = [type: FeedType.DVM, ...items: DVMItem[]]
 export type DifferenceFeed = [type: FeedType.Difference, ...feeds: Feed[]]
 export type IDFeed = [type: FeedType.ID, ...ids: string[]]
@@ -66,17 +71,15 @@ export type ListFeed = [type: FeedType.List, ...items: ListItem[]]
 export type WOTFeed = [type: FeedType.WOT, ...items: WOTItem[]]
 export type RelayFeed = [type: FeedType.Relay, ...urls: string[]]
 export type ScopeFeed = [type: FeedType.Scope, ...scopes: Scope[]]
-export type SinceAgoFeed = [type: FeedType.SinceAgo, since_ago: number]
-export type SinceFeed = [type: FeedType.Since, since: number]
+export type SearchFeed = [type: FeedType.Search, ...searches: string[]]
 export type SymmetricDifferenceFeed = [type: FeedType.SymmetricDifference, ...feeds: Feed[]]
 export type TagFeed = [type: FeedType.Tag, key: string, ...values: string[]]
 export type UnionFeed = [type: FeedType.Union, ...feeds: Feed[]]
-export type UntilAgoFeed = [type: FeedType.UntilAgo, until_ago: number]
-export type UntilFeed = [type: FeedType.Until, until: number]
 
 export type Feed =
   AddressFeed |
   AuthorFeed |
+  CreatedAtFeed |
   DVMFeed |
   DifferenceFeed |
   IDFeed |
@@ -86,16 +89,14 @@ export type Feed =
   WOTFeed |
   RelayFeed |
   ScopeFeed |
-  SinceAgoFeed |
-  SinceFeed |
+  SearchFeed |
   SymmetricDifferenceFeed |
   TagFeed |
-  UnionFeed |
-  UntilAgoFeed |
-  UntilFeed
+  UnionFeed
 
 export const addressFeed = (...addresses: string[]): AddressFeed => [FeedType.Address, ...addresses]
 export const authorFeed = (...pubkeys: string[]): AuthorFeed => [FeedType.Author, ...pubkeys]
+export const createdAtFeed = (...items: CreatedAtItem[]): CreatedAtFeed => [FeedType.CreatedAt, ...items]
 export const dvmFeed = (...items: DVMItem[]): DVMFeed => [FeedType.DVM, ...items]
 export const differenceFeed = (...feeds: Feed[]): DifferenceFeed => [FeedType.Difference, ...feeds]
 export const idFeed = (...ids: string[]): IDFeed => [FeedType.ID, ...ids]
@@ -105,23 +106,26 @@ export const listFeed = (...items: ListItem[]): ListFeed => [FeedType.List, ...i
 export const wotFeed = (...items: WOTItem[]): WOTFeed => [FeedType.WOT, ...items]
 export const relayFeed = (...urls: string[]): RelayFeed => [FeedType.Relay, ...urls]
 export const scopeFeed = (...scopes: Scope[]): ScopeFeed => [FeedType.Scope, ...scopes]
-export const sinceAgoFeed = (since_ago: number): SinceAgoFeed => [FeedType.SinceAgo, since_ago]
-export const sinceFeed = (since: number): SinceFeed => [FeedType.Since, since]
+export const searchFeed = (...searches: string[]): SearchFeed => [FeedType.Search, ...searches]
 export const symmetricDifferenceFeed = (...feeds: Feed[]): SymmetricDifferenceFeed => [FeedType.SymmetricDifference, ...feeds]
 export const tagFeed = (key: string, ...values: string[]): TagFeed => [FeedType.Tag, key, ...values]
 export const unionFeed = (...feeds: Feed[]): UnionFeed => [FeedType.Union, ...feeds]
-export const untilAgoFeed = (until_ago: number): UntilAgoFeed => [FeedType.UntilAgo, until_ago]
-export const untilFeed = (until: number): UntilFeed => [FeedType.Until, until]
 
-export const feedsFromFilter = (filter: Filter) => {
+export const feedsFromFilter = ({since, until, ...filter}: Filter) => {
   const feeds = []
 
+  if (since && until) {
+    feeds.push(createdAtFeed({since, until}))
+  } else if (since) {
+    feeds.push(createdAtFeed({since}))
+  } else if (until) {
+    feeds.push(createdAtFeed({until}))
+  }
+
   for (const [k, v] of Object.entries(filter)) {
     if (k === 'ids') feeds.push(idFeed(...v as string[]))
     else if (k === 'kinds') feeds.push(kindFeed(...v as number[]))
     else if (k === 'authors') feeds.push(authorFeed(...v as string[]))
-    else if (k === 'since') feeds.push(sinceFeed(v as number))
-    else if (k === 'until') feeds.push(untilFeed(v as number))
     else if (k.startsWith('#')) feeds.push(tagFeed(k as string, ...v as string[]))
     else throw new Error(`Unable to create feed from filter ${k}: ${v}`)
   }
@@ -131,7 +135,24 @@ export const feedsFromFilter = (filter: Filter) => {
 
 export const feedFromFilter = (filter: Filter) => intersectionFeed(...feedsFromFilter(filter))
 
-export const hasSubFeeds = ([type]: [FeedType]) =>
+export const isAddressFeed = (feed: Feed) => feed[0] === FeedType.Address
+export const isAuthorFeed = (feed: Feed) => feed[0] === FeedType.Author
+export const isCreatedAtFeed = (feed: Feed) => feed[0] === FeedType.CreatedAt
+export const isDvmFeed = (feed: Feed) => feed[0] === FeedType.DVM
+export const isDifferenceFeed = (feed: Feed) => feed[0] === FeedType.Difference
+export const isIdFeed = (feed: Feed) => feed[0] === FeedType.ID
+export const isIntersectionFeed = (feed: Feed) => feed[0] === FeedType.Intersection
+export const isKindFeed = (feed: Feed) => feed[0] === FeedType.Kind
+export const isListFeed = (feed: Feed) => feed[0] === FeedType.List
+export const isWotFeed = (feed: Feed) => feed[0] === FeedType.WOT
+export const isRelayFeed = (feed: Feed) => feed[0] === FeedType.Relay
+export const isScopeFeed = (feed: Feed) => feed[0] === FeedType.Scope
+export const isSearchFeed = (feed: Feed) => feed[0] === FeedType.Search
+export const isSymmetricDifferenceFeed = (feed: Feed) => feed[0] === FeedType.SymmetricDifference
+export const isTagFeed = (feed: Feed) => feed[0] === FeedType.Tag
+export const isUnionFeed = (feed: Feed) => feed[0] === FeedType.Union
+
+export const hasSubFeeds = ([type]: [FeedType, ...any[]]) =>
   [
     FeedType.Union,
     FeedType.Intersection,
diff --git a/packages/util/Router.ts b/packages/util/Router.ts
index 071b6cf..ffc926b 100644
--- a/packages/util/Router.ts
+++ b/packages/util/Router.ts
@@ -82,7 +82,7 @@ export class Router {
 
   sortRelaySelections = (relaySelections: RelayValues[]) => {
     const scores = new Map<string, number>()
-    const getScore = (relayValues: RelayValues) => scores.get(relayValues.relay) || 0
+    const getScore = (relayValues: RelayValues) => -(scores.get(relayValues.relay) || 0)
 
     for (const relayValues of relaySelections) {
       scores.set(relayValues.relay, this.scoreRelaySelection(relayValues))
diff --git a/packages/util/Tags.ts b/packages/util/Tags.ts
index e8aa31a..166f0ad 100644
--- a/packages/util/Tags.ts
+++ b/packages/util/Tags.ts
@@ -98,7 +98,11 @@ export class Tags extends (Fluent<Tag> as OmitStatics<typeof Fluent<Tag>, 'from'
     const dispatchTags = (thisTags: Tags) =>
       thisTags.forEach((t: Tag, i: number) => {
         if (t.mark() === 'root') {
-          roots.push(t.valueOf())
+          if (thisTags.whereMark("reply").count() === 0) {
+            replies.push(t.valueOf())
+          } else {
+            roots.push(t.valueOf())
+          }
         } else if (t.mark() === 'reply') {
           replies.push(t.valueOf())
         } else if (t.mark() === 'mention') {