It's really not that hard: "We consider trolling to be the creation of deliberately provocative posts with the aim of upsetting a member or inciting an angry or otherwise emotional response."
http://atheistforums.org/rules.php
http://atheistforums.org/rules.php
At the age of five, Skagra decided emphatically that God did not exist. This revelation tends to make most people in the universe who have it react in one of two ways - with relief or with despair. Only Skagra responded to it by thinking, 'Wait a second. That means there's a situation vacant.'