I created a maximizer toolbar and pointed it to the link you referred to. It takes me there but doesn't show me the person's location when i highlight it in the address book.
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 .