In my opinion trolling is very rare on Amiga.org compared to the other boards I use. But any troll is a troll too much, I think.
On my forum I have a kind of auto-moderation(?) that cancels posts that contain certain words in certain contexts. It has been very effective in testing, but if it is good enough for real world use remains to be seen. It's REBOL based, in part.
I figure you could do the same on A.org, just stop posts containing the words "Amiga" and "Pegasos" and you're laughing! :-D