You started this thread and yet don't seem to be prepared to give your own views. Why? were you waiting to see what the majority opinion is so that you could go with that?
yer, coz I am really one to just go with the majority.
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 .