I kind of wondering the same thing as i tried to introduce myself and have zilch to show for it (so far).
Hi, I apologize for the confusion. Due to an overwhelming influx of spammers selling everything from cell phones to penis enlargement to almost everything else, we have had to implement some rather aggressive anti-spam measures. One of the ways we manage spam is by sending any posts from newly-registered users that contain URLs or domain names (and certain keywords likely to identify them as spam) into a moderation queue. Normally, these get looked at fairly quickly but sometimes they get missed. Once you've been here a while and posted some, your posts containing URLs or keywords will no longer get sent to the moderation queue. If you post a message and it has not shown up in a couple of hours, please email the moderators and we'll look into it for you. I apologize for the problems.