I'd suggest the worst trolls, flamers, and self-righteous prigs at this point are NOT the guests.

Let us name names of members who routinely flame others, and who routinely respond in kind:

Martin Gibson
brucie
Clinton Hammond
McGrath of Harlow
Gargoyle
Amos

And at any given time, the individual members who have wrangled with the above for entire threads. They come and go. But you can always count on it from the above.