Have we defined what a troll is for SDMB purposes?

[Frylock]

Somewhere on the board, is there an official or generally recognized definition of the concept of a "troll"? Or should I just rely on what I get when I do a google search on the term?

[BigT]

The glossary (http://boards.straightdope.com/sdmb/showthread.php?t=320298) points to this SDSAB article (http://www.straightdope.com/columns/read/1764/what-is-a-troll).