I've been blessed with the people I've been fortunate to be around. They are great people and Friends! (Actually, the truth is, I didn't teach him anything. He was too busy laughing at me!)
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 .