I figured it out!
I am so smart!

Its the flame wars and the pure nastiness you can get from posting your thoughts/ideas/opinions and whatever on the forums that scares people away.
It keeps people from registering so they don't post back or post something they thought was nice and get a rude response in return. I personally have had to be told by people in the past to back away from the forums or at least certain topics until I calmed down about the issue..and I don't mean because I was pissed off ..sometimes it was because I was so upset or even in tears at what some of you guys were saying that my friends would have to tell me things like 'stop reading that thread for now!' "don't post for 24 hours" 'don't listen to what they are saying" or just whatever (and of course I never listened

and you can tell what posts I've made where I was rather emotional and upset

) I don't think people realize how much their words can hurt someone and they just post away as if they don't care about anyone but themselves.
And in fact I now know people that have switched from registered users to deleting their accounts and not reading the forums anymore or at least if they do they don't log in to an account because of this issue.
Also If you ask me it should NOT be mandatory to be a part of the forums to play Planeshift-- a game based on role play..because the forums are very OOC if you ask me. I mean yes there are a few IC threads and what not like I guess its supposed to be a sign or something that my char would see at harn's..but if I can't learn about it in game where my char is then I don't regard it as super important because not everyone uses the forums for their own personal reason but I think the main reason is because people can be just plain mean.
thats just my opinion.
* Izzabella steps off her soap box and prepares to be flamed.