diff --git a/web/app/components/thread/thread.getters.test.js b/web/app/components/thread/thread.getters.test.js
new file mode 100644
index 00000000..e8fc6791
--- /dev/null
+++ b/web/app/components/thread/thread.getters.test.js
@@ -0,0 +1,31 @@
+import store from 'common/store';
+import { getThreadIsCollapsed } from './thread.getters';
+
+describe('collapsedThreads', () => {
+  const notScoredComment = { id: 1 };
+  const goodComment = { id: 1, score: 3 };
+  const badComment = { id: 1, score: -1 };
+
+  it('takes value from the state', () => {
+    const state = { collapsedThreads: { [notScoredComment.id]: true } };
+    const collapsed = getThreadIsCollapsed(state, notScoredComment);
+    expect(collapsed).toEqual(true);
+  });
+
+  beforeAll(() => {
+    const config = { critical_score: 2 };
+    store.set('config', config);
+  });
+
+  it('returns true when score is less then critical_score', () => {
+    const state = { collapsedThreads: {} };
+    const collapsed = getThreadIsCollapsed(state, badComment);
+    expect(collapsed).toEqual(true);
+  });
+
+  it('returns true when score is less then critical_score', () => {
+    const state = { collapsedThreads: {} };
+    const collapsed = getThreadIsCollapsed(state, goodComment);
+    expect(collapsed).toEqual(false);
+  });
+});
diff --git a/web/app/components/thread/thread.reducers.test.js b/web/app/components/thread/thread.reducers.test.js
index f48e8931..954feaee 100644
--- a/web/app/components/thread/thread.reducers.test.js
+++ b/web/app/components/thread/thread.reducers.test.js
@@ -1,29 +1,18 @@
 import { setCollapse } from './thread.actions';
 import { collapsedThreads } from './thread.reducers';
-import { getThreadIsCollapsed } from './thread.getters';
 
 describe('collapsedThreads', () => {
   const comment = { id: 1 };
 
   it('should set collapsed to true', () => {
-    const collapsed = true;
-    const action = setCollapse(comment, collapsed);
-
-    const newState = {
-      collapsedThreads: collapsedThreads({}, action),
-    };
-
-    expect(getThreadIsCollapsed(newState, comment)).toEqual(collapsed);
+    const action = setCollapse(comment, true);
+    const newState = collapsedThreads({}, action);
+    expect(newState).toEqual({ [comment.id]: true });
   });
 
   it('should set collapsed to false', () => {
-    const collapsed = false;
-    const action = setCollapse(comment, collapsed);
-
-    const newState = {
-      collapsedThreads: collapsedThreads({}, action),
-    };
-
-    expect(getThreadIsCollapsed(newState, comment)).toEqual(collapsed);
+    const action = setCollapse(comment, false);
+    const newState = collapsedThreads({}, action);
+    expect(newState).toEqual({ [comment.id]: false });
   });
 });
diff --git a/web/app/components/user-info/index.js b/web/app/components/user-info/index.js
index ee5e4016..d58b6c8c 100644
--- a/web/app/components/user-info/index.js
+++ b/web/app/components/user-info/index.js
@@ -1,3 +1,7 @@
+import { userComments, isLoadingUserComments } from './user-info.reducers';
+
+export const userInfoReducers = { userComments, isLoadingUserComments };
+
 export { default } from './user-info';
 
 require('./user-info.scss');
diff --git a/web/app/components/user-info/user-info.actions.js b/web/app/components/user-info/user-info.actions.js
new file mode 100644
index 00000000..403ca402
--- /dev/null
+++ b/web/app/components/user-info/user-info.actions.js
@@ -0,0 +1,12 @@
+export const USER_INFO_FETCH_COMMENTS = 'USER_INFO/FETCH_COMMENTS';
+export const fetchComments = userId => ({
+  type: USER_INFO_FETCH_COMMENTS,
+  userId,
+});
+
+export const USER_INFO_COMPLETE_FETCH_COMMENTS = 'USER_INFO/COMPLETE_FETCH_COMMENTS';
+export const completeFetchComments = (userId, comments) => ({
+  type: USER_INFO_COMPLETE_FETCH_COMMENTS,
+  userId,
+  comments,
+});
diff --git a/web/app/components/user-info/user-info.getters.js b/web/app/components/user-info/user-info.getters.js
new file mode 100644
index 00000000..c5067547
--- /dev/null
+++ b/web/app/components/user-info/user-info.getters.js
@@ -0,0 +1,2 @@
+export const getUserComments = (state, userId) => state.userComments[userId] || null;
+export const getIsLoadingUserComments = (state, userId) => state.isLoadingUserComments[userId] || false;
diff --git a/web/app/components/user-info/user-info.getters.test.js b/web/app/components/user-info/user-info.getters.test.js
new file mode 100644
index 00000000..c59118ac
--- /dev/null
+++ b/web/app/components/user-info/user-info.getters.test.js
@@ -0,0 +1,40 @@
+import { getUserComments, getIsLoadingUserComments } from './user-info.getters';
+
+describe('getUserComments', () => {
+  const userId = 1;
+  const comments = [{ id: 1 }];
+
+  it('returns null when comments have not been loaded', () => {
+    const state = { userComments: {} };
+    const userComments = getUserComments(state, userId);
+    expect(userComments).toEqual(null);
+  });
+
+  it('returns comments when comments have been loaded', () => {
+    const state = { userComments: { [userId]: comments } };
+    const userComments = getUserComments(state, userId);
+    expect(userComments).toEqual(comments);
+  });
+});
+
+describe('getIsLoadingUserComments', () => {
+  const userId = 1;
+
+  it('returns false when state is empty', () => {
+    const state = { isLoadingUserComments: {} };
+    const loading = getIsLoadingUserComments(state, userId);
+    expect(loading).toEqual(false);
+  });
+
+  it('returns false when comments are not loading', () => {
+    const state = { isLoadingUserComments: { [userId]: false } };
+    const loading = getIsLoadingUserComments(state, userId);
+    expect(loading).toEqual(false);
+  });
+
+  it('returns true when comments are loading', () => {
+    const state = { isLoadingUserComments: { [userId]: true } };
+    const loading = getIsLoadingUserComments(state, userId);
+    expect(loading).toEqual(true);
+  });
+});
diff --git a/web/app/components/user-info/user-info.jsx b/web/app/components/user-info/user-info.jsx
index d31833ec..155f8863 100644
--- a/web/app/components/user-info/user-info.jsx
+++ b/web/app/components/user-info/user-info.jsx
@@ -1,29 +1,31 @@
 /** @jsx h */
 import { h, Component } from 'preact';
+import { connect } from 'preact-redux';
 
 import api from 'common/api';
 import LastCommentsList from './last-comments-list';
 import Avatar from 'components/avatar-icon';
+import { fetchComments, completeFetchComments } from './user-info.actions';
+import { getUserComments, getIsLoadingUserComments } from './user-info.getters';
 
 class UserInfo extends Component {
-  constructor(props) {
-    super(props);
-
-    this.state = {
-      comments: [],
-      isLoading: true,
-    };
-  }
-
   componentWillMount() {
     const {
       user: { id },
+      comments,
+      isLoading,
+      fetchComments,
+      completeFetchComments,
     } = this.props;
 
-    api
-      .getUserComments({ user: id, limit: 10 })
-      .then(({ comments = [] }) => this.setState({ comments }))
-      .finally(() => this.setState({ isLoading: false }));
+    if (!comments && !isLoading) {
+      fetchComments(id);
+
+      api
+        .getUserComments({ user: id, limit: 10 })
+        .then(({ comments }) => completeFetchComments(id, comments))
+        .catch(() => completeFetchComments(id, []));
+    }
 
     document.addEventListener('keydown', this.globalOnKeyDown);
   }
@@ -40,9 +42,12 @@ class UserInfo extends Component {
     }
   }
 
-  render(props, { comments, isLoading }) {
+  render(props) {
     const {
       user: { name, id, isDefaultPicture, picture },
+      comments = [],
+      isLoading,
+      onClose,
     } = props;
 
     return (
@@ -51,10 +56,20 @@ class UserInfo extends Component {
         <p className="user-info__title">Last comments by {name}</p>
         <p className="user-info__id">{id}</p>
 
-        <LastCommentsList isLoading={isLoading} comments={comments} />
+        {!!comments && <LastCommentsList isLoading={isLoading} comments={comments} />}
+
+        <span {...getHandleClickProps(onClose)} className="user-info__close">
+          Close &#10006;
+        </span>
       </div>
     );
   }
 }
 
-export default UserInfo;
+export default connect(
+  (state, props) => ({
+    comments: getUserComments(state, props.user.id),
+    isLoading: getIsLoadingUserComments(state, props.user.id),
+  }),
+  { fetchComments, completeFetchComments }
+)(UserInfo);
diff --git a/web/app/components/user-info/user-info.reducers.js b/web/app/components/user-info/user-info.reducers.js
new file mode 100644
index 00000000..23e58b7d
--- /dev/null
+++ b/web/app/components/user-info/user-info.reducers.js
@@ -0,0 +1,37 @@
+import { USER_INFO_FETCH_COMMENTS, USER_INFO_COMPLETE_FETCH_COMMENTS } from './user-info.actions';
+
+export const userComments = (state = {}, action) => {
+  switch (action.type) {
+    case USER_INFO_FETCH_COMMENTS: {
+      return {
+        ...state,
+        [action.userId]: [],
+      };
+    }
+    case USER_INFO_COMPLETE_FETCH_COMMENTS:
+      return {
+        ...state,
+        [action.userId]: action.comments,
+      };
+    default:
+      return state;
+  }
+};
+
+export const isLoadingUserComments = (state = {}, action) => {
+  switch (action.type) {
+    case USER_INFO_FETCH_COMMENTS: {
+      return {
+        ...state,
+        [action.userId]: true,
+      };
+    }
+    case USER_INFO_COMPLETE_FETCH_COMMENTS:
+      return {
+        ...state,
+        [action.userId]: false,
+      };
+    default:
+      return state;
+  }
+};
diff --git a/web/app/components/user-info/user-info.reducers.test.js b/web/app/components/user-info/user-info.reducers.test.js
new file mode 100644
index 00000000..12d6c8b4
--- /dev/null
+++ b/web/app/components/user-info/user-info.reducers.test.js
@@ -0,0 +1,45 @@
+import { fetchComments, completeFetchComments } from './user-info.actions';
+import { userComments, isLoadingUserComments } from './user-info.reducers';
+
+const userId = 1;
+const comments = [{ id: 1 }];
+
+describe('userComments', () => {
+  it('should return {} by default', () => {
+    const action = { type: 'OTHER' };
+    const newState = userComments({}, action);
+    expect(newState).toEqual({});
+  });
+
+  it('should return [] on USER_INFO_FETCH_COMMENTS', () => {
+    const action = fetchComments(userId);
+    const newState = userComments({}, action);
+    expect(newState).toEqual({ [userId]: [] });
+  });
+
+  it('should return comments on USER_INFO_COMPLETE_FETCH_COMMENTS', () => {
+    const action = completeFetchComments(userId, comments);
+    const newState = userComments({}, action);
+    expect(newState).toEqual({ [userId]: comments });
+  });
+});
+
+describe('isLoadingUserComments', () => {
+  it('should return {} by default', () => {
+    const action = { type: 'OTHER' };
+    const newState = isLoadingUserComments({}, action);
+    expect(newState).toEqual({});
+  });
+
+  it('should return [] on USER_INFO_FETCH_COMMENTS', () => {
+    const action = fetchComments(userId);
+    const newState = isLoadingUserComments({}, action);
+    expect(newState).toEqual({ [userId]: true });
+  });
+
+  it('should return comments on USER_INFO_COMPLETE_FETCH_COMMENTS', () => {
+    const action = completeFetchComments(userId, comments);
+    const newState = isLoadingUserComments({}, action);
+    expect(newState).toEqual({ [userId]: false });
+  });
+});
diff --git a/web/app/remark.js b/web/app/remark.js
index a402e81e..840844d8 100644
--- a/web/app/remark.js
+++ b/web/app/remark.js
@@ -23,12 +23,6 @@ loadPolyfills().then(() => {
   }
 });
 
-const Main = () => (
-  <Provider store={reduxStore}>
-    <Root />
-  </Provider>
-);
-
 function init() {
   const node = document.getElementById(NODE_ID);
 
@@ -59,13 +53,21 @@ function init() {
     render(
       <div id={NODE_ID}>
         <div className="root root_user-info">
-          <UserInfo user={user} />
+          <Provider store={reduxStore}>
+            <UserInfo user={user} onClose={onClose} />
+          </Provider>
         </div>
       </div>,
       node.parentElement,
       node
     );
   } else {
-    render(<Main />, node.parentElement, node);
+    render(
+      <Provider store={reduxStore}>
+        <Root />
+      </Provider>,
+      node.parentElement,
+      node
+    );
   }
 }
diff --git a/web/app/store.js b/web/app/store.js
index 1604ef3b..fd570b1c 100644
--- a/web/app/store.js
+++ b/web/app/store.js
@@ -2,9 +2,11 @@ import { createStore, applyMiddleware } from 'redux';
 import { combineReducers } from 'redux';
 
 import { threadReducers, threadMiddlewares } from './components/thread';
+import { userInfoReducers } from './components/user-info';
 
 const reducers = combineReducers({
   ...threadReducers,
+  ...userInfoReducers,
 });
 
 const middlewares = applyMiddleware(...threadMiddlewares);
diff --git a/web/package.json b/web/package.json
index f04f5c52..bb739a1a 100644
--- a/web/package.json
+++ b/web/package.json
@@ -6,6 +6,7 @@
     "start": "webpack-dev-server --progress --hot --inline --config ./webpack.config.js",
     "lint": "eslint --ext=.js,.jsx .",
     "test": "jest",
+    "test:coverage": "jest --coverage",
     "prettier": "prettier --write \"./**/*.{js,jsx,scss}\"",
     "precommit": "./node_modules/.bin/lint-staged"
   },