Age: 28
Location: Voorhees, N.J.
2007 Revenue: Undisclosed
Employees: 10
Founded: 1996
Website: www.buzzmg.com

Tina Wells was a teenager herself when she began writing product reviews for young girls, years before the youth marketing movement exploded. Today, her reviews go straight to the source, providing market research and strategies for SonyBMG, Sesame Workshop, and other youth-oriented businesses via a network of more than 9,000 teen consultants. Wells, who's been featured in O, The Oprah Magazine, says she used to wear suits to impress her corporate clients. "Now I wear whatever I like," she says.