diff --git a/plugins/talk-plugin-comment-content/client/containers/CommentContent.js b/plugins/talk-plugin-comment-content/client/containers/CommentContent.js
new file mode 100644
index 000000000..2c9b36aa9
--- /dev/null
+++ b/plugins/talk-plugin-comment-content/client/containers/CommentContent.js
@@ -0,0 +1,10 @@
+import {gql} from 'react-apollo';
+import {withFragments} from 'plugin-api/beta/client/hocs';
+import CommentContent from '../components/CommentContent';
+
+export default withFragments({
+  comment: gql`
+    fragment TalkPluginCommentContent_comment on Comment {
+      body
+    }`
+})(CommentContent);
diff --git a/plugins/talk-plugin-comment-content/client/index.js b/plugins/talk-plugin-comment-content/client/index.js
index e61cb51f4..06b6dee84 100644
--- a/plugins/talk-plugin-comment-content/client/index.js
+++ b/plugins/talk-plugin-comment-content/client/index.js
@@ -1,4 +1,4 @@
-import CommentContent from './components/CommentContent';
+import CommentContent from './containers/CommentContent';
 
 export default {
   slots: {
diff --git a/plugins/talk-plugin-member-since/client/containers/MemberSinceInfo.js b/plugins/talk-plugin-member-since/client/containers/MemberSinceInfo.js
index 186e9c8c1..81e0600cd 100644
--- a/plugins/talk-plugin-member-since/client/containers/MemberSinceInfo.js
+++ b/plugins/talk-plugin-member-since/client/containers/MemberSinceInfo.js
@@ -13,7 +13,7 @@ class MemberSinceInfoContainer extends React.Component {
 
 const withMemberSinceInfoFragments = withFragments({
   comment: gql`
-    fragment TalkAuthorMenu_MemberSinceInfo_comment on Comment {
+    fragment TalkMemberSince_MemberSinceInfo_comment on Comment {
       user {
         username
         created_at
diff --git a/plugins/talk-plugin-member-since/client/index.js b/plugins/talk-plugin-member-since/client/index.js
index cfb60d867..12aed5e28 100644
--- a/plugins/talk-plugin-member-since/client/index.js
+++ b/plugins/talk-plugin-member-since/client/index.js
@@ -1,9 +1,35 @@
 import MemberSinceInfo from './containers/MemberSinceInfo';
 import translations from './translations.yml';
+import {gql} from 'react-apollo';
 
 export default {
   slots: {
     authorMenuInfos: [MemberSinceInfo]
   },
-  translations
+  translations,
+  fragments: {
+    CreateCommentResponse: gql`
+      fragment TalkMemberSince_CreateCommentResponse on CreateCommentResponse {
+        comment {
+          user {
+            created_at
+          }
+        }
+      }`,
+  },
+  mutations: {
+    PostComment: () => ({
+      optimisticResponse: {
+        createComment: {
+          comment: {
+            user: {
+              created_at: new Date(),
+              __typename: 'User'
+            },
+            __typename: 'Comment'
+          }
+        },
+      },
+    }),
+  },
 };