If you can get into being topped, you can see if he likes being rimmed. If he does and you like doing it you could have a hell of a time before getting fucked. I like rimming so can have a lot of fun for a long time before I flip over.
I interpret your post to mean that the length of time someone has been a member and the number of posts/reviews the posters/reviewers have submitted will always be things that people will consider when they are looking at guys to hire.