Social networking boom in Silicon Valley

The advances are defying a U.S. housing slump that has sent national values to an eight-year low. Share sales such as the IPO of LinkedIn -- which doubled on its first day of trading -- and an expected offering from Facebook will fuel a boom in some Silicon Valley cities into 2013, said Kenneth Rosen, an economist at the University of California, Berkeley.Bloomberg

This will not last. None of these companies have any idea on how to make money.