Quote ="phillgee"although if we didn't feed it, it would leave quicker?'"
I don't subscribe to that. Although the regulars will see it and can leave it alone, those who only visit occasionally won't and will keep responding.
Unless some kind of announcement system starts up to tell everyone the trolls to ignore, someone will always rise, so it's perhaps better for the regulars to tell them where to go.
Alternatively, perhaps a sticky thread of "Trolls to ignore" could be put up. That way, we can share the list of idiots with all.