diff --git a/.gitignore b/.gitignore
index daeba5f9..95c723c9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,6 @@
 *~
 node_modules
-.DS_Store
+*.swp
+DS_Store
+
+comments.json
diff --git a/public/index.html b/public/index.html
index 21340e72..55387878 100644
--- a/public/index.html
+++ b/public/index.html
@@ -13,10 +13,151 @@
   </head>
   <body>
     <div id="content"></div>
-    <script type="text/babel" src="scripts/example.js"></script>
     <script type="text/babel">
-      // To get started with this tutorial running your own code, simply remove
-      // the script tag loading scripts/example.js and start writing code here.
+
+      var CommentBox = React.createClass({
+        getInitialState: function() {
+          return {data: []};
+        },
+        loadCommentsFromServer: function() {
+          $.ajax({
+            url: this.props.url,
+            dataType: 'json',
+            cache: false,
+            success: function(data) {
+              this.setState({data: data});
+            }.bind(this),
+            error: function(xhr, status, err) {
+              console.error(this.props.url, status, err.toString());
+            }.bind(this)
+          });
+        },
+        componentDidMount: function() {
+          this.loadCommentsFromServer();
+          setInterval(this.loadCommentsFromServer, this.props.pollInterval);
+        },
+
+        handleCommentSubmit: function(comment) {
+          // Optimistically set an id on the new comment. It will be replaced by an
+          // id generated by the server. In a production application you would likely
+          // not use Date.now() for this and would have a more robust system in place.
+          comment.id = Date.now();
+          var comments = this.state.data;
+          var newComments = comments.concat([comment]);
+          this.setState({data: newComments}); // use optimistic data before ajax call
+
+          $.ajax({
+            url: this.props.url,
+            dataType: 'json',
+            type: 'POST',
+            data: comment,
+            cache: false,
+            success: function(data) {
+              this.setState({data: data}); // update to real data on success
+            }.bind(this),
+            error: function(xhr, status, err) {
+              this.setState({data: comments}); // if something went wrong go back to old data
+              console.error(this.props.url, status, err.toString());
+            }.bind(this)
+          });
+        },
+
+        render: function() {
+          return (
+            <div className="commentBox">
+              <h1>Comments</h1>
+              <CommentList data={this.state.data} />
+              <CommentForm onCommentSubmit={this.handleCommentSubmit} />
+            </div>
+          );
+        }
+      });
+
+      var CommentList = React.createClass({
+        render: function() {
+          var commentNodes = this.props.data.map(function(comment) {
+            return (
+              <Comment author={comment.author} key={comment.id}>
+                {comment.text}
+              </Comment>
+            );
+          });
+          return (
+            <div className="commentList">
+              {commentNodes}
+            </div>
+          );
+        }
+      });
+
+      var Comment = React.createClass({
+        rawMarkup: function() {
+          var rawMarkup = marked(this.props.children.toString(), {sanitize: true});
+          return { __html: rawMarkup };
+        },
+        render: function() {
+          return (
+            <div className="comment">
+              <h2 className="commentAuthor">
+                {this.props.author}
+              </h2>
+              <span dangerouslySetInnerHTML={this.rawMarkup()} />
+            </div>
+          );
+        }
+      });
+
+      var CommentForm = React.createClass({
+        getInitialState: function() {
+          return {author: '', text: ''};
+        },
+        handleAuthorChange: function(e) {
+          this.setState({author: e.target.value});
+        },
+        handleTextChange: function(e) {
+          this.setState({text: e.target.value});
+        },
+        handleSubmit: function(e) {
+          e.preventDefault();
+          var author = this.state.author.trim();
+          var text = this.state.text.trim();
+          if (!text || !author) {
+            return;
+          }
+          this.props.onCommentSubmit({author: author, text: text});
+          this.setState({author: '', text: ''});
+        },
+
+        render: function() {
+          return (
+            <form className="commentForm" onSubmit={this.handleSubmit}>
+              <input
+                type="text"
+                placeholder="Your name."
+                value={this.state.author}
+                onChange={this.handleAuthorChange}
+              />
+              <input
+                type="text"
+                placeholder="Say something..."
+                value={this.state.text}
+                onChange={this.handleTextChange}
+              />
+              <input type="submit" value="Post" />
+            </form>
+          );
+        }
+      });
+
+      var data = [
+        {id: 1, author: "Pete Hunt", text: "This is one comment"},
+        {id: 2, author: "Jordan Walke", text: "This is *another* comment"},
+      ];
+
+      ReactDOM.render(
+        <CommentBox url="/api/comments" pollInterval={2000} />,
+        document.getElementById('content')
+      ); // the script tag loading scripts/example.js and start writing code here.
     </script>
   </body>
 </html>
diff --git a/scratch.md b/scratch.md
new file mode 100644
index 00000000..f34a9b00
--- /dev/null
+++ b/scratch.md
@@ -0,0 +1,4 @@
+- CommentBox
+  - CommentList
+    - Comment
+  - CommentForm
