New users have restricted posting ability until they reach a certain post count. They are flagged as "Newbies" under their avatar. Once the post count is reached they are promoted to "Members" group.This makes spam easier to deal with by restricting how many forums it will appear in. Because spam is nearly uncontrollable even as it is. With three CAPTCHAs we moderators are still banning spammers 5-10 times a day. With fewer than that, it gets even worse.Trust me, we didn't do this lightly. I'd love to be able to get rid of some. But we're a very popular forum with precisely zero paid staff, so we have to do what we can.