Chris Anderson, a writer at Wired Magazine and author of the influential The Long Tail: Why the Future of Business is Selling Less of More, makes some good points about the insanity of Facebook’s $15 billion valuation, the inadequacy of current approaches to social networking, and the implications of an over-reliance on advertising as a business model. His arguments are useful because entrepreneurs can use them to make concrete business or strategic decisions. He doesn’t use namby pamby qualifications to hedge his bets and predictions. I do …