I used to post on Usenet in the late 90s.
As part of a group that called ourselves the 'haters' and our sole mission to join various groups and just troll relentlessly. But, I would never resort to insults and would keep it calm and made sure everything was proof-read before being posted (because there are always the grammar Nazis). That act of keeping calm and not insulting is the best weapon in a troll's arsenal. That and a good vocabulary, it just serves to wind them up all the more, digging away until they break and post lots of insults with the caps lock on. At which point, you called 'TILT!' and then moved on elsewhere.

Now I think about it, we were just cunts really, nothing more. Winding up Americans was the best though.
( sandettie light vessel automatic New Twitter - @bollocksreally, Thu 19 May 2011, 12:41, 6 replies)

ab.(.d) what?

(Misery McUglywife an attention seeking sociopathic fuckstain., Thu 19 May 2011, 12:57, closed)

TILT?
RIS?
( Enzyme is powered by sunlight, Thu 19 May 2011, 15:10, closed)

TILT
As in what a pinball machine does if you're rough with. It starts flashing the word TILT and makes noises.
( sandettie light vessel automatic New Twitter - @bollocksreally, Thu 19 May 2011, 15:14, closed)

My favourite standard response was
VAGINABOND U R A MORON!!!!!!!!!!!!!!!
( Je suis un vagabond is an unfunny, up your own arse middle class knob, Thu 19 May 2011, 16:13, closed)

Grammar Nazis
Do they have massive rallies at which they all proof read books instead of burning them?
( number5 has been fighting tramps and losing., Thu 19 May 2011, 16:21, closed)

^click^
What a wonderful image!
( SteamedCleaner, Sat 21 May 2011, 3:41, closed)