I was addressing your response to Netcan's suggestion. Social networking is not an area I am interested in, but I happen to have previously listened to the eGuardian episode of the Frank Peters Show, and it popped into my head when you mentioned security problems with social-networking sites for 14-year-olds.

Another point about market opportunity: some high-school and college students go to same-sex institutions (which might be a good idea, since it minimizes distraction, and hence could become more popular over time).