The ad's field doesn't respond with the keyboard when touched, but the link for the privacy policy opens up - to the privacy policy. You might want to address this programming problem.
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 .