additionally:
http://ehub.journalism.ku.edu/2006/12/06/different-trolls-for-different-folks
"Internet trolls, however, are for the most part, generally bad. I’d like to maintain my naivety and just keep believing trolls are good, but with the rise of the bad internet trolls, it’s putting a damper on my “good troll” image.
Internet trolls are rapidly hacking into other people's business at an alarming rate. The whole point of an internet troll apparently is to make computer life hell for the person they're disrupting. All an internet troll likes to do is roam the internet undetected and stir up trouble for people. Sort of like standing under the bridge and making trouble for the Billy goats that want to walk across.
I've personally never dealt with an internet troll (knock on wood), but so many people have that there's endless websites about how to spot a troll and what to do after you become victim to a troll.
The craziest thing is that this is such a big phenomenon/problem, the American Psychiatric Association has officially recognized and included in its fifth edition of the Diagnostic and Statistical Manual of Mental Disorders, Internet Troll Personality Disorder as an official mental disorder. My mental picture of an internet troll is of some creep who lives in their parents’ basement and just surfs the internet making trouble all day. Of course they’re scruffy, dirty, smelly and overweight.
So as of now, I can't really complain about internet trolls affecting my life. I'm sure once they find me, I'll be checking the how to help get rid of trolls website. For now, I'll just keep thinking of a troll as my Norwegian buddy, who still stands on my shelf to protect me at night; not an internet creep with internet troll personality disorder."