Largely an explanation of why social sites make crappy advertising businesses. Other revenue / profit-generating elements don't get nearly the same depth of ana

Largely an explanation of why social sites make crappy advertising businesses. Other revenue / profit-generating elements don't get nearly the same depth of analysis and insight. But it's a well-thought out article, and anyone who takes the time to lay that out and still admit they "could be wrong about all of this of course" is worth paying some attention to.