Best way with trolls is to leave them alone because your time is a valuable resource.
The most fun way to deal with trolls is by showing them that you don't take them seriously, so extremely short and direct posts that still picks on them only not with a rational argument, but rather something that says "you're not a real person".
For example if somebody is using CAPS on you, you'd say "That's cute, you really think your words can hurt me?"
This kind of attitude deters them sooner or later because it's not fun to troll someone if they are not taking it personally. Ah, will the lessons from the schoolyard ever stop being useful?
