bad trolls are easy to spot.
people who are truly good at trolling can do it without being suspected of trolling for years.
like UtM did to Talad and the settings department.
Or Talad did to PS
(Although, to be fair, people started suspecting him pretty quickly).
In response to the bible, and equally credible book once wrote:
"Run, run as fast as you can, you can't catch me, I'm the stinky cheese man."