Social-networking chief Cook

As far as I can tell, only one of the Top 10 social-networking sites were founded by teenagers and beta-tested in their high school, and that's the story with MyYearbook.com, which gets 3 million+ visitors a month, makes millions of dollars a year from advertising, and just received $4.1 million in venture capital. teenage entrepreneurialism seems to be more common every day, and both teenagers and parents might be interested in stories about how it happens. Seventeen-year-old Catherine Cook founded her new Jersey-based social-networking site with her older brother Dave (who's now in college; Catherine starts her freshman year shortly) because they were new at their high school, turned to the yearbook to find and meet new friends, and thought it'd be even better - much quicker and convenient - to have an online version, Catherine told CNET's Stefanie Olsen in a recent interview. Here's an earlier profile of Catherine in the San Francisco Chronicle.