Just because someone is on Fet doesn't mean they are in kids or dogs. There are lots of "just here for some experimentation" or "just had a divorce, need to party" or "20 somethings wanting to be edgy for a few months so they can say `I did that thing`" types of people that pop in and leave in a few months and don't really build the community. They seem like normal vanilla folk who wanted to give it an honest go, which makes me think surveying Fet doesn't mean "extreme kink" is over-represented because of it.