Weeeeell... I've never been the one to shy back from a good argument. But that also means, it has to be a good argument! If some dumb-twit resorts to out-of-context name-calling, fact-bending (or outright inventing stuff), and calling backup for ten other trolls, accusing me of random things I've never said, then I'll rather turn my back. Sorry. But since the above is also my definition of a troll, I have to admit that I don't mind anger, or even some creative insults, as long as they fit the context. However, all of that is mostly conceptual, since most actual trolls are incapable of any of this. So it's either all or nothing, and with such options I'd much rather go for nothing. But that's just me.
Another thing I was gonna mention in my last reply:
Even though comments are generally hardly ever rewarded, I still consider them to be blogger's gold, since that's what tends to lead to follows, and thus many upvotes in the long term.