Many of those users post in the "How Do I Look?" section, get their responses, and move on once they feel they're not getting any more opinions. There are others that use the site and realize they don't like it.
Probably a catfish. I found one the other day. We were talking for a bit and "she" started sending me dirty pics. I reverse searched them on google and found out it wasn't her. When I called them out on it they blocked me on here and tried saying they use to be a cam girl.