They try to convince you of things such as how safe it is to accept PayPal from international bidders, etc. So, be sure to wear your tinfoil hat when viewing!
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 .