The best way to deal with a troll is to not feed it. That's why the trolls' dilemma exists.
It is basically an insistence on the
person being addressed (or group addressed) to respond or be considered defeated.
The urge to not have a
default to defeat is strong for many, and so the trolls' dilemma may easily
get a response.
This is the dilemma, though. To respond, the troll wins, but to not respond, the troll scores an arbitrary and often false 'victory'.
It is often used as a last resort once the troll has been exposed, or as a strong opening
bait to hook the victims early.
"You all know deep in your hearts that there are
secret alien organizations in our governments working against us all. You won't answer me, though, because you know it's true. You're afraid."
-- This is merely one
way of using The Trolls' Dilemma.