User blog comment:Fistful of Force/Report people for being toxic, not playing badly./@comment-99.229.45.199-20121223215223/@comment-5266525-20121225011604

Because 'trolling' is an extremely ill-defined word. It's split into sub-categories instead.

Spamming wards is basically 'Assisting enemy team' by dint of refusing to help stop them. Think about it.