Say farewell to the single Silicon Valley billionaire. The entrepreneurs from the latest wave of ventures haven't yet made enough to qualify. As for the previous generation of bachelors, who founded their companies in the 1990s: they're well into their thirties now, and dropping. Pictured here, David Filo, low-profile co-founder of Yahoo, with his girlfriend of 13 years, Angela Buenning, a photographer and teacher in East Palo Alto. They're now married, announced Jerry Yang, Filo's original partner in the business, on the stage at the internet company's holiday party, on Saturday. Congratulations to the couple; commiserations to any magazine editors planning color pieces on the Valley's billionaire bachelors.