diff --git a/src/lib/api/api-polyfill.ts b/src/lib/api/api-polyfill.ts
index e3aec76316..32eb53fbbd 100644
--- a/src/lib/api/api-polyfill.ts
+++ b/src/lib/api/api-polyfill.ts
@@ -51,7 +51,10 @@ async function fetchHandler(
 
   const res = await fetch(reqUri, {
     method: reqMethod,
-    headers: reqHeaders,
+    headers: {
+      ...reqHeaders,
+      'x-bsky-entryway': 'short-session'
+    },
     body: reqBody,
     signal: controller.signal,
   })
diff --git a/src/lib/api/api-polyfill.web.ts b/src/lib/api/api-polyfill.web.ts
index 1ad22b3d02..421bceaadb 100644
--- a/src/lib/api/api-polyfill.web.ts
+++ b/src/lib/api/api-polyfill.web.ts
@@ -1,3 +1,69 @@
+import {BskyAgent, jsonToLex, stringifyLex} from '@atproto/api'
+
+const GET_TIMEOUT = 15e3 // 15s
+const POST_TIMEOUT = 60e3 // 60s
+
 export function doPolyfill() {
-  // no polyfill is needed on web
+  BskyAgent.configure({fetch: fetchHandler})
+}
+
+interface FetchHandlerResponse {
+  status: number
+  headers: Record<string, string>
+  body: any
+}
+
+async function fetchHandler(
+  reqUri: string,
+  reqMethod: string,
+  reqHeaders: Record<string, string>,
+  reqBody: any,
+): Promise<FetchHandlerResponse> {
+  const reqMimeType = reqHeaders['Content-Type'] || reqHeaders['content-type']
+  if (reqMimeType && reqMimeType.startsWith('application/json')) {
+    reqBody = stringifyLex(reqBody)
+  }
+
+  const controller = new AbortController()
+  const to = setTimeout(
+    () => controller.abort(),
+    reqMethod === 'post' ? POST_TIMEOUT : GET_TIMEOUT,
+  )
+
+  const res = await fetch(reqUri, {
+    method: reqMethod,
+    headers: {
+      ...reqHeaders,
+      'x-bsky-entryway': 'short-session'
+    },
+    body: reqBody,
+    signal: controller.signal,
+  })
+
+  const resStatus = res.status
+  const resHeaders: Record<string, string> = {}
+  res.headers.forEach((value: string, key: string) => {
+    resHeaders[key] = value
+  })
+  const resMimeType = resHeaders['Content-Type'] || resHeaders['content-type']
+  let resBody
+  if (resMimeType) {
+    if (resMimeType.startsWith('application/json')) {
+      resBody = jsonToLex(await res.json())
+    } else if (resMimeType.startsWith('text/')) {
+      resBody = await res.text()
+    } else if (resMimeType === 'application/vnd.ipld.car') {
+      resBody = await res.arrayBuffer()
+    } else {
+      throw new Error('Non-supported mime type')
+    }
+  }
+
+  clearTimeout(to)
+
+  return {
+    status: resStatus,
+    headers: resHeaders,
+    body: resBody,
+  }
 }
diff --git a/src/state/feed-feedback.tsx b/src/state/feed-feedback.tsx
index 0a6c1d585e..91ef4cc4bb 100644
--- a/src/state/feed-feedback.tsx
+++ b/src/state/feed-feedback.tsx
@@ -35,7 +35,7 @@ export function useFeedFeedback(feed: FeedDescriptor, hasSession: boolean) {
   const aggregatedStats = React.useRef<AggregatedStats | null>(null)
   const throttledFlushAggregatedStats = React.useMemo(
     () =>
-      throttle(() => flushToStatsig(aggregatedStats.current), 45e3, {
+      throttle(() => flushToStatsig(aggregatedStats.current), 5e3, {
         leading: true, // The outer call is already throttled somewhat.
         trailing: true,
       }),
@@ -43,22 +43,41 @@ export function useFeedFeedback(feed: FeedDescriptor, hasSession: boolean) {
   )
 
   const sendToFeedNoDelay = React.useCallback(() => {
-    const proxyAgent = agent.withProxy(
-      // @ts-ignore TODO need to update withProxy() to support this key -prf
-      'bsky_fg',
-      // TODO when we start sending to other feeds, we need to grab their DID -prf
-      'did:web:discover.bsky.app',
-    ) as BskyAgent
-
     const interactions = Array.from(queue.current).map(toInteraction)
     queue.current.clear()
 
-    // Send to the feed
-    proxyAgent.app.bsky.feed
-      .sendInteractions({interactions})
-      .catch((e: any) => {
-        logger.warn('Failed to send feed interactions', {error: e})
-      })
+    if (true) {
+      // Send to the feed
+      agent.app.bsky.feed
+        .sendInteractions({ interactions }, {
+          encoding: 'application/json',
+          headers: {
+            'atproto-proxy': 'did:web:discover.bsky.app#bsky_fg'
+          }
+        })
+        .catch((e: any) => {
+          logger.warn('Failed to send feed interactions', { error: e })
+        })
+    } else {
+      const proxyAgent = agent.withProxy(
+        // @ts-ignore TODO need to update withProxy() to support this key -prf
+        'bsky_fg',
+        // TODO when we start sending to other feeds, we need to grab their DID -prf
+        'did:web:discover.bsky.app',
+      ) as BskyAgent
+
+      // Send to the feed
+      proxyAgent.app.bsky.feed
+        .sendInteractions({ interactions }, {
+          encoding: 'application/json',
+          headers: {
+            'atproto-proxy': 'did:web:discover.bsky.app#bsky_fg'
+          }
+        })
+        .catch((e: any) => {
+          logger.warn('Failed to send feed interactions', { error: e })
+        })
+    }
 
     // Send to Statsig
     if (aggregatedStats.current === null) {
@@ -70,7 +89,7 @@ export function useFeedFeedback(feed: FeedDescriptor, hasSession: boolean) {
 
   const sendToFeed = React.useMemo(
     () =>
-      throttle(sendToFeedNoDelay, 15e3, {
+      throttle(sendToFeedNoDelay, 1e3, {
         leading: false,
         trailing: true,
       }),
diff --git a/src/state/session/logging.ts b/src/state/session/logging.ts
index 16aa66fe72..ea4d9cf1dd 100644
--- a/src/state/session/logging.ts
+++ b/src/state/session/logging.ts
@@ -71,6 +71,7 @@ let nextMessageIndex = 0
 const MAX_SLICE_LENGTH = 1000
 
 export function addSessionDebugLog(log: Log) {
+  console.log(new Date(), log)
   try {
     if (!Statsig.initializeCalled() || !Statsig.getStableID()) {
       // Drop these logs for now.
diff --git a/src/view/com/util/List.web.tsx b/src/view/com/util/List.web.tsx
index f2b2add377..ecc714910d 100644
--- a/src/view/com/util/List.web.tsx
+++ b/src/view/com/util/List.web.tsx
@@ -29,7 +29,7 @@ export type ListProps<ItemT> = Omit<
 }
 export type ListRef = React.MutableRefObject<any | null> // TODO: Better types.
 
-const ON_ITEM_SEEN_WAIT_DURATION = 1.5e3 // when we consider post to  be "seen"
+const ON_ITEM_SEEN_WAIT_DURATION = 100 // when we consider post to  be "seen"
 const ON_ITEM_SEEN_INTERSECTION_OPTS = {
   rootMargin: '-200px 0px -200px 0px',
 } // post must be 200px visible to be "seen"