This will prevent iam from sending you messages, friend request or from viewing your profile. They will not be notified. Comments on discussion boards from them will be hidden by default.
“I have known the joy and pain of friendship. I have served and been served. I have made some good enemies for which I am not a bit sorry. I have loved unselfishly, and I have fondled hatred with the red-hot tongs of Hell. That's living.”
―
Zora Neale Hurston