No, it's there. As far as I know all registrants must be approved by Aaron himself which usually takes 6-8 months.
The way I do it at Sega-16 is to require an answer to a specific question, like "What is two times three minus five?" or "What color is Sonic?". Incorrect answer, no go. It really has cut down on spam and that way I don't have to approve each and every new member (which was REALLY annoying).