This will prevent Elsa 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.
“The longer she spent in America, the better she had become at distinguishing, sometimes from looks and gait, but mostly from bearing and demeanor, that fine-grained mark that culture stamps on people. (Chapter 17)”
―
Chimamanda Ngozi Adichie