Darren, for some reason, seems keen on working around an American internet use policy (namely COPPA) which requires under thirteens to get written permission from a parent or guardian to use a forum. This then gets posted to Darren and he activates the minor. Too much of a hassle and so under thirteens are frozen out (which makes me wonder why our kid forum is so active, in retrospect: grow up, you lot!). The date of birth you sign up with can be used as a defence - so if a minor signs up to say they are eighteen, Darren is covered.