diff --git a/web/components/charity/feed-items.tsx b/web/components/charity/feed-items.tsx
index 9216e776..43d03c7b 100644
--- a/web/components/charity/feed-items.tsx
+++ b/web/components/charity/feed-items.tsx
@@ -3,7 +3,7 @@ import { Avatar } from '../avatar'
 import { useUserById } from '../../hooks/use-users'
 import { UserLink } from '../user-page'
 import { manaToUSD } from '../../pages/charity/[charitySlug]'
-import { RelativeTimestamp } from '../feed/feed-items'
+import { RelativeTimestamp } from '../relative-timestamp'
 
 export function Donation(props: { txn: Txn }) {
   const { txn } = props
diff --git a/web/components/comments-list.tsx b/web/components/comments-list.tsx
new file mode 100644
index 00000000..7461c6f1
--- /dev/null
+++ b/web/components/comments-list.tsx
@@ -0,0 +1,65 @@
+import { Comment } from '../../common/comment'
+import { Contract } from '../../common/contract'
+import { contractPath } from '../lib/firebase/contracts'
+import { SiteLink } from './site-link'
+import { Row } from './layout/row'
+import { Avatar } from './avatar'
+import { RelativeTimestamp } from './relative-timestamp'
+import { UserLink } from './user-page'
+import { User } from '../../common/user'
+import { Col } from './layout/col'
+import { Linkify } from './linkify'
+
+export function UserCommentsList(props: {
+  user: User
+  commentsByUniqueContracts: Map<Contract, Comment[]>
+}) {
+  const { commentsByUniqueContracts } = props
+
+  return (
+    <Col className={'bg-white'}>
+      {Array.from(commentsByUniqueContracts).map(([contract, comments]) => (
+        <div key={contract.id} className={'border-width-1 border-b p-5'}>
+          <div className={'mb-2 text-sm text-indigo-700'}>
+            <SiteLink href={contractPath(contract)}>
+              {contract.question}
+            </SiteLink>
+          </div>
+          {comments.map((comment) => (
+            <div key={comment.id} className={'relative pb-6'}>
+              <div className="relative flex items-start space-x-3">
+                <ProfileComment comment={comment} />
+              </div>
+            </div>
+          ))}
+        </div>
+      ))}
+    </Col>
+  )
+}
+
+function ProfileComment(props: { comment: Comment }) {
+  const { comment } = props
+  const { text, userUsername, userName, userAvatarUrl, createdTime } = comment
+  // TODO: find and attach relevant bets by comment betId at some point
+  return (
+    <div>
+      <Row className={'gap-4'}>
+        <Avatar username={userUsername} avatarUrl={userAvatarUrl} />
+        <div className="min-w-0 flex-1">
+          <div>
+            <p className="mt-0.5 text-sm text-gray-500">
+              <UserLink
+                className="text-gray-500"
+                username={userUsername}
+                name={userName}
+              />{' '}
+              <RelativeTimestamp time={createdTime} />
+            </p>
+          </div>
+          <Linkify text={text} />
+        </div>
+      </Row>
+    </div>
+  )
+}
diff --git a/web/components/contract/contracts-list.tsx b/web/components/contract/contracts-list.tsx
index dab8613d..e84af1ea 100644
--- a/web/components/contract/contracts-list.tsx
+++ b/web/components/contract/contracts-list.tsx
@@ -341,19 +341,8 @@ export function SearchableGrid(props: {
   )
 }
 
-export function CreatorContractsList(props: { creator: User }) {
-  const { creator } = props
-  const [contracts, setContracts] = useState<Contract[] | 'loading'>('loading')
-
-  useEffect(() => {
-    if (creator?.id) {
-      // TODO: stream changes from firestore
-      listContracts(creator.id).then(setContracts)
-    }
-  }, [creator])
-
-  if (contracts === 'loading') return <></>
-
+export function CreatorContractsList(props: { contracts: Contract[] }) {
+  const { contracts } = props
   return (
     <SearchableGrid
       contracts={contracts}
diff --git a/web/components/feed/feed-items.tsx b/web/components/feed/feed-items.tsx
index 472f6649..dbf3ece3 100644
--- a/web/components/feed/feed-items.tsx
+++ b/web/components/feed/feed-items.tsx
@@ -55,6 +55,7 @@ import { trackClick } from '../../lib/firebase/tracking'
 import { firebaseLogin } from '../../lib/firebase/users'
 import { DAY_MS } from '../../../common/util/time'
 import NewContractBadge from '../new-contract-badge'
+import { RelativeTimestamp } from '../relative-timestamp'
 import { calculateCpmmSale } from '../../../common/calculate-cpmm'
 
 export function FeedItems(props: {
@@ -357,17 +358,6 @@ export function CommentInput(props: {
   )
 }
 
-export function RelativeTimestamp(props: { time: number }) {
-  const { time } = props
-  return (
-    <DateTimeTooltip time={time}>
-      <span className="ml-1 whitespace-nowrap text-gray-400">
-        {fromNow(time)}
-      </span>
-    </DateTimeTooltip>
-  )
-}
-
 function getBettorsPosition(
   contract: Contract,
   createdTime: number,
diff --git a/web/components/layout/tabs.tsx b/web/components/layout/tabs.tsx
index 45b6a7d7..fc9dd775 100644
--- a/web/components/layout/tabs.tsx
+++ b/web/components/layout/tabs.tsx
@@ -1,6 +1,7 @@
 import clsx from 'clsx'
 import Link from 'next/link'
 import { useState } from 'react'
+import { Row } from './row'
 
 type Tab = {
   title: string
@@ -10,8 +11,13 @@ type Tab = {
   href?: string
 }
 
-export function Tabs(props: { tabs: Tab[]; defaultIndex?: number }) {
-  const { tabs, defaultIndex } = props
+export function Tabs(props: {
+  tabs: Tab[]
+  defaultIndex?: number
+  className?: string
+  onClick?: (tabName: string) => void
+}) {
+  const { tabs, defaultIndex, className, onClick } = props
   const [activeIndex, setActiveIndex] = useState(defaultIndex ?? 0)
   const activeTab = tabs[activeIndex]
 
@@ -28,19 +34,21 @@ export function Tabs(props: { tabs: Tab[]; defaultIndex?: number }) {
                     e.preventDefault()
                   }
                   setActiveIndex(i)
+                  onClick?.(tab.title)
                 }}
                 className={clsx(
                   activeIndex === i
                     ? 'border-indigo-500 text-indigo-600'
                     : 'border-transparent text-gray-500 hover:border-gray-300 hover:text-gray-700',
-                  'cursor-pointer whitespace-nowrap border-b-2 py-4 px-1 text-sm font-medium'
+                  'cursor-pointer whitespace-nowrap border-b-2 py-3 px-1 text-sm font-medium',
+                  className
                 )}
                 aria-current={activeIndex === i ? 'page' : undefined}
               >
-                {tab.tabIcon ? (
-                  <span className="mr-2">{tab.tabIcon}</span>
-                ) : null}
-                {tab.title}
+                <Row className={'items-center justify-center gap-1'}>
+                  {tab.tabIcon && <span> {tab.tabIcon}</span>}
+                  {tab.title}
+                </Row>
               </a>
             </Link>
           ))}
diff --git a/web/components/relative-timestamp.tsx b/web/components/relative-timestamp.tsx
new file mode 100644
index 00000000..cd5ca713
--- /dev/null
+++ b/web/components/relative-timestamp.tsx
@@ -0,0 +1,14 @@
+import { DateTimeTooltip } from './datetime-tooltip'
+import { fromNow } from '../lib/util/time'
+import React from 'react'
+
+export function RelativeTimestamp(props: { time: number }) {
+  const { time } = props
+  return (
+    <DateTimeTooltip time={time}>
+      <span className="ml-1 whitespace-nowrap text-gray-400">
+        {fromNow(time)}
+      </span>
+    </DateTimeTooltip>
+  )
+}
diff --git a/web/components/user-page.tsx b/web/components/user-page.tsx
index b73cffc4..0f033ce3 100644
--- a/web/components/user-page.tsx
+++ b/web/components/user-page.tsx
@@ -12,6 +12,15 @@ import { Row } from './layout/row'
 import { LinkIcon } from '@heroicons/react/solid'
 import { genHash } from '../../common/util/random'
 import { PencilIcon } from '@heroicons/react/outline'
+import { Tabs } from './layout/tabs'
+import { UserCommentsList } from './comments-list'
+import { useEffect, useState } from 'react'
+import { Comment, getUsersComments } from '../lib/firebase/comments'
+import { Contract } from '../../common/contract'
+import { getContractFromId, listContracts } from '../lib/firebase/contracts'
+import { LoadingIndicator } from './loading-indicator'
+import { useRouter } from 'next/router'
+import _ from 'lodash'
 
 export function UserLink(props: {
   name: string
@@ -29,10 +38,47 @@ export function UserLink(props: {
   )
 }
 
-export function UserPage(props: { user: User; currentUser?: User }) {
-  const { user, currentUser } = props
+export function UserPage(props: {
+  user: User
+  currentUser?: User
+  defaultTabTitle?: string
+}) {
+  const router = useRouter()
+  const { user, currentUser, defaultTabTitle } = props
   const isCurrentUser = user.id === currentUser?.id
   const bannerUrl = user.bannerUrl ?? defaultBannerUrl(user.id)
+  const [usersComments, setUsersComments] = useState<Comment[]>([] as Comment[])
+  const [usersContracts, setUsersContracts] = useState<Contract[] | 'loading'>(
+    'loading'
+  )
+  const [commentsByContract, setCommentsByContract] = useState<
+    Map<Contract, Comment[]> | 'loading'
+  >('loading')
+
+  useEffect(() => {
+    if (!user) return
+    getUsersComments(user.id).then(setUsersComments)
+    listContracts(user.id).then(setUsersContracts)
+  }, [user])
+
+  useEffect(() => {
+    const uniqueContractIds = _.uniq(
+      usersComments.map((comment) => comment.contractId)
+    )
+    Promise.all(
+      uniqueContractIds.map((contractId) => getContractFromId(contractId))
+    ).then((contracts) => {
+      const commentsByContract = new Map<Contract, Comment[]>()
+      contracts.forEach((contract) => {
+        if (!contract) return
+        commentsByContract.set(
+          contract,
+          usersComments.filter((comment) => comment.contractId === contract.id)
+        )
+      })
+      setCommentsByContract(commentsByContract)
+    })
+  }, [usersComments])
 
   return (
     <Page>
@@ -138,8 +184,59 @@ export function UserPage(props: { user: User; currentUser?: User }) {
         </Col>
 
         <Spacer h={10} />
-
-        <CreatorContractsList creator={user} />
+        {usersContracts !== 'loading' && commentsByContract != 'loading' ? (
+          <Tabs
+            className={'pb-2 pt-1 '}
+            defaultIndex={defaultTabTitle === 'Comments' ? 1 : 0}
+            onClick={(tabName) =>
+              router.push(
+                {
+                  pathname: `/${user.username}`,
+                  query: { tab: tabName },
+                },
+                undefined,
+                { shallow: true }
+              )
+            }
+            tabs={[
+              {
+                title: 'Markets',
+                content: <CreatorContractsList contracts={usersContracts} />,
+                tabIcon: (
+                  <div
+                    className={clsx(
+                      usersContracts.length > 9 ? 'px-1' : 'px-1.5',
+                      'items-center rounded-full border-2 border-current py-0.5 text-xs'
+                    )}
+                  >
+                    {usersContracts.length}
+                  </div>
+                ),
+              },
+              {
+                title: 'Comments',
+                content: (
+                  <UserCommentsList
+                    user={user}
+                    commentsByUniqueContracts={commentsByContract}
+                  />
+                ),
+                tabIcon: (
+                  <div
+                    className={clsx(
+                      usersComments.length > 9 ? 'px-1' : 'px-1.5',
+                      'items-center rounded-full border-2 border-current py-0.5 text-xs'
+                    )}
+                  >
+                    {usersComments.length}
+                  </div>
+                ),
+              },
+            ]}
+          />
+        ) : (
+          <LoadingIndicator />
+        )}
       </Col>
     </Page>
   )
diff --git a/web/lib/firebase/comments.ts b/web/lib/firebase/comments.ts
index 381269d2..e97e6f99 100644
--- a/web/lib/firebase/comments.ts
+++ b/web/lib/firebase/comments.ts
@@ -1,11 +1,11 @@
 import {
-  doc,
   collection,
-  setDoc,
-  query,
   collectionGroup,
-  where,
+  doc,
   orderBy,
+  query,
+  setDoc,
+  where,
 } from 'firebase/firestore'
 import _ from 'lodash'
 
@@ -13,6 +13,7 @@ import { getValues, listenForValues } from './utils'
 import { db } from './init'
 import { User } from '../../../common/user'
 import { Comment } from '../../../common/comment'
+
 export type { Comment }
 
 export const MAX_COMMENT_LENGTH = 10000
@@ -125,3 +126,13 @@ export async function getDailyComments(
 
   return commentsByDay
 }
+
+const getUsersCommentsQuery = (userId: string) =>
+  query(
+    collectionGroup(db, 'comments'),
+    where('userId', '==', userId),
+    orderBy('createdTime', 'desc')
+  )
+export async function getUsersComments(userId: string) {
+  return await getValues<Comment>(getUsersCommentsQuery(userId))
+}
diff --git a/web/pages/[username]/index.tsx b/web/pages/[username]/index.tsx
index de88d52a..e1e63260 100644
--- a/web/pages/[username]/index.tsx
+++ b/web/pages/[username]/index.tsx
@@ -9,7 +9,7 @@ import Custom404 from '../404'
 export default function UserProfile() {
   const router = useRouter()
   const [user, setUser] = useState<User | null | 'loading'>('loading')
-  const { username } = router.query as { username: string }
+  const { username, tab } = router.query as { username: string; tab: string }
   useEffect(() => {
     if (username) {
       getUserByUsername(username).then(setUser)
@@ -21,7 +21,11 @@ export default function UserProfile() {
   if (user === 'loading') return <></>
 
   return user ? (
-    <UserPage user={user} currentUser={currentUser || undefined} />
+    <UserPage
+      user={user}
+      currentUser={currentUser || undefined}
+      defaultTabTitle={tab}
+    />
   ) : (
     <Custom404 />
   )