1. Minor verbal abuse and harassment. That is universally punished in tribunal. Ofc I report.
2. As requested from the enemy team. I report both the guy that asks to report someone, and that someone.
3.Negative attitude like stealing the jungle creeps / buffs I was killing.
4. Unsportsmanlike remarks like "bg", "camp me more l0l", "need 3 to kill me?"
5. AFK's, Duo jungles or duo mids, feeders and all that.
I love reporting. AND I'm pretty sure that all of the above is bannable to the tribunal judges, from what I've seen here in GD.