If you've been hanging out in online religious circles then I'm sure you've seen Beliefnet's Belief-O-Matic several times over. If not, then go over there right now and take it. It's an interesting twenty question quiz that helps people figure out exactly what label they should wear on their chest spiritually speaking. The thing isn't exactly perfect (I don't like the wording on the divorce question, for instance) but it is a great starting to help you discover exactly what you belief in.
It's a pretty good diagnostic tool too. I've taken it many times over the last 4 years and it's been interesting to see how my opinions have on religion have shift over that time. The first time I took it I was 100% Liberal Quaker. When I took it six months ago, Nontheist was at the top of the list. When I took it 5 minutes ago it showed Secular Humanism. Universal Unitarianism, Neo-Pagan, and Theravada Buddhism have always been high on my list too. Not surprisingly Roman Catholic and Jehovah's Witness have always been at the very very bottom. I don't see them gaining any time soon either. Scientology is in the middle, which scares me.
So anyways, enough about me. Go over there and see what box you are supposed to be in. If you actually read this post then put your results in the comments.