In a memorable scene in the movie “The Social Network,” Sean Parker, the investor played by Justin Timberlake, leans over the table and tells the founders of Facebook in a conspiratorial tone: “A million dollars isn’t cool. You know what’s cool? A billion dollars.”
These days in Silicon Valley, a billion dollars seems downright quaint. The enthusiasm for social networking and mobile apps has venture capitalists clamoring to give money to young companies.