Almost every troll is male; I don't know why this is.

The troll has few social skills, and most have never had a girlfriend, many never will.

There's a clear pattern among trolls; they are much more likely to ignore posts known to be from women. And when they do respond to women, they are much more likely to be brief, abusive, condescending and patronising.

This is almost certainly more due to fear than misogyny - they just don't know any women. Except Mom. But their attitude rather reduces their chances of reproducing, which is probably a good thing.

Trolls have no self respect and low self esteem, and cannot cope with normal human interaction; start with a bit of flattery, and they may be stuck for a response. Even if they recover, they will not able to react appropriately, which should convince everyone of their trollism.

Trolls focus on their target, not the issue; additonally, most trolls can only pick on one person at a time. This leaves them wide open to paralysis when you talk about them, but not to them.