Originally Posted by
Robert Carver
Two other suggestions: A lot of forums will isolate new members into a "newbie" usergroup that has very limited privileges (like no signature) and all posts up to a certain number must be moderated. In other words, the posts must be approved by a member of the moderation staff. Once the magic number is reached, they are promoted to another more senior usergroup (like "Member") and their posts will no longer be moderated.
On that similar note, I have an add-on that I use that restricts members with less than XX number of posts from posting any sort of a link. Yes, sometimes they will spoof the URL (like spelling out DOT COM), but those you just whack for breaking the rules and trying to circumvent your restrictions.