Each time you post, your post is approved, and normally within 24 hours, unless we are all gone to an event. You've just not participated in discussions enough to kick the software over into Registered User status.
At this point, you are limited in two areas---you can't access your profile (which means you can't use Private Messaging). And you can't use the Classified Ads.
You can post and join discussions though. Not a problem at all there.
Once you have enough moderator approved posts, you gain Registered User status. Then your post appears as soon as you post it. You don't have to wait for a moderator to read it. And, you'll be able to use the classifieds and the private messaging system.
All the best,
Provost Aide de Camp
»Let us endeavor so to live that when we come to die even the undertaker will be sorry." >Mark Twain