I've heard that these BDSM sites have many trolls or members that are horrible to newbies. This also goes on with Pagan sites. On Pagan sites its usually done by people who would be bullies (in normal situations) or those who are voyeurs with sad lives, just wanting to make themselves feel better.

Why do people do this on BDSM sites as it takes a lot of 'guts' to join-up and open-up, with your innermost thoughts and desires?