This will prevent Debbie 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.
“We all have a social mask, right? We put it on, we go out, put our best foot forward, our best image. But behind that social mask is a personal truth, what we really, really believe about who we are and what we're capable of.”
―
Phil McGraw