Social Networks' Failed Advertising Strategy

theseminal.com — First it was Sergey Brin in Google’s January analyst call. Then AOL's Randy Falco in an internal memo. Now Facebook’s new COO Sheryl Sandberg has made it unanimous. No one has a clue how to make money on the enormous traffic spiraling through Social Networks. Sandberg told CNN.com “How we get [to advertising profitability], I don't think we know."