Your definition of a troll is ridiculous. There are good and bad people, there are good and bad trolls.
If that was directed at the opening post, it is the opinion of the study's authors.
I endorse the findings, and apply them to the troll personalities active on the site.
"Good troll" is an oxymoron.

Some of the worst trolls on the site are shedding big crocodile tears they can't spread their brand of hatred everywhere
Don't you find it fricking hilarious that yesterday I called Jamie a clear narcissitic headcase and today she writes a blog about narcissitic trolls and how horrible they are? I totally agree. Too bad you don't see it in yourself, Jamie. You blocked me. Too bad.
Yes, quite funny, Jamie / iron lung / kaynight / RJ Cote... are you all the same person? Seriously its hard to tell ...
Stupidity knows no bounds.
You have used your one "annoyingly dumb" post quota.