Maybe a "skin" for the background, rather that plain white. Some sort of graphic element, runners, measurers, etc. Doesn't have to be high-res (in fact it's better if it's not) and it should be a muted grayscale so the navigation buttons are still visible.
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 .