Feel free to add comments at the bottom of any post.
1. Click "comments" and a window will open for you to type your comment.
2. After you have typed your comment roll down and type the word shown on the "word verification" field.
3. When done roll down and click "publish".
4. You will see your comment under the post.
3. Go back to "Home".
Since comments are embeded under the post, when you go to "home" you won't see your comments displayed but you will see a number of comments on a post (if any). If you want to read them hit "comments" and you will see them all.