Their is a report button. If you feel a user is abusive report them but remember it goes both ways. My only concern is that reporting abusive is anonymous so it becomes a tit for tat scenario.
I know it's pathetic
The Big Misconception About Electricity
This vid goes quite a ways down the road to explaining why:
1) Power cords make a not so subtle difference.
2) Cable elevators should not be looked at askance.
Regards, barts