I see seven posts for you now. It's possible that you were looking in the wrong place, or that your posts simply hadn't been approved yet at the time you were looking.
Your moderators are volunteers here. We don't sit around all day waiting for posts to come through so we can review them. It gets done when we have the time, so you may need to have a little patience from time to time.
All new members' posts are moderated for a period of time, not just for the first post. But eventually members are able to post directly to the forum without being pre-moderated.
And, as Logan mentioned, it isn't just about spam. It's also about adding value to the forum. I can (and have) disapproved posts that were obviously intended just to "bump" the member's post count (to clarify: I'm not talking about your
posts, just low-value posts in general).
I look forward to your continuing participation in our discussions!