Girl Ambition is a social-networking site on a mission. The site, which is aimed at 7- to 13-year-old girls, does more than provide communication tools. It also teaches values. Girl Ambition's CEO, Hilary DeCesare, says it's about boosting girls' self-esteem "to help promote positive female role models, going forward." In an interview, DeCesare says some activities focus on "liking yourself and your limitations." The site also teaches online safety, which makes it, in a sense, training wheels for teen social networks like Facebook and MySpace.