I'm fascinated by trolls, mainly because a former friend became one. It's interesting to read about the darkness that resides within these people.

Troll with it:

...the data exposed a quite different reality: internet tossers are just tossers, whether online or in real life.

In other words: the internet isn’t making people rotten, it’s just handing the rotten people a bigger microphone.

I’ve dealt with someone in my life who really enjoys trolling. I no longer talk to him, but it got me interested in why someone would want to be so intentionally unpleasant. Here are some explanations.

The Making of an American Nazi: