What I find interesting about your thread, Alfredo, is there are different definitions of trolling depending on who you ask. Now there is a central consensus, so it's not like the definitions are radically different but on top of this there is also the discussion about baiting and trolling.
If you ask me, the main problem with bait is that it might be not be so obvious until someone actually takes the bait. Or bait might be unintentional which then leads to accusations despite no ill intent. So moderation especially towards "bait posts" can feel like a shot in the dark, at least that what I think.







