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I wouldn't exactly say that this is monetizing 'trolling'

I'm also appalled that a gaming site would confuse "trolling" and "griefing".

Hm?

Griefing is just being annoying, while trolling is both a art and an science.

a science

I see what you did there.

The people paying to add may be simply griefing, but what Peter himself has done certainly qualifies as trolling.