Looks like we need a block feature. 
I can't keep the event notifiers on, because one user keeps spamming me with chatter and random items. Even after being asked to stop. 

Some of us prefer figuring things out on our own, and don't want any freebies. Dunno why that's so hard to accept for some.

Thank you for suggestion! This feature in our to-do already, we completely agree that it's important to give the players this ability.