If you want an expert to give you feedback, check out Mark Rippetoe's forum. He is one of the top in the business. Just be prepared for a brutally honest assessment.....
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 .