Diane Keng + $100,000 investment + venture capitalist father, Diane Keng at 19, What she did: Before graduating from high school, this Silicon Valley native had already co-founded a popular social network site with her brother. Cupertino, CA, MyWeboo.com, Diane and Steven Keng, Diane Keng + $100,000 investment + venture capitalist father, Diane Keng + T-shirt screen-printing, Santa Clara University,