I've never had much patience for tattling
It hurts me at the cellular level. Recently, I ran across a neat idea from both @thepespecialist (Ben Landers) and @coachpirillo (Benjamin Pirillo) who use a conflict corner to let students work out their own issues. Here are their poster display ideas for the area (which I just blow up into poster size using http://rasterbator.net/):
It tickles my inner geek that Batman is the one asking students to give a compliment! Not his strong suit!