I think it would be nice to have the ability to block or ignore a bothersome person. I have heard of some that have refused to accept 'No' for an answer, and repeatedly invited people to play or as friend even after being declined. And I have had people post on my wall that I would prefer not have that acess. Players should have the ability to block people like this from inviting, or sending further friend req. A blocked person should not be able to post on your wall, etc.