Well yes, I guess so. But what information other than the recipient's data would I want to merge in? I'm struggling to think of a real use for this feature...
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 .