I just spotted that you were using an Auctiva Thumb image. I switched to the _o.jpg (original image name stored) and removed some code for this result.
When you block a person, they can no longer invite you to a private message or post to your profile wall. Replies and comments they make will be collapsed/hidden by default. Finally, you'll never receive email notifications about content they create or likes they designate for your content.
Note: if you proceed, you will no longer be following .