We have been getting some spammers trying to join recently, but it appears to be an automated program, since the "over 13" box hasn't been checked and they need administrator approval to complete registration. I check the host and IP addresses and find them listed on many forums as known spammers. I delete all such members.
If any of these spammers do get through and post, please notify me immediately. Personal messages go to my business email address, so I will always see those first.