Thread:Foman123/@comment-3974095-20140813182615/@comment-3974095-20140818180231

By notifications I assume you mean through email. These notifications on when a new users join can be disabled from your personal preferences page, because receiving Message Wall notifications when a user joins simply doesn't happen, unless they respond (which in my experience does happen, but not to an excessive extend).

Anyways, it really wouldn't hurt to try.