An unproar in the world of tech blogs is uncovering a broader fault line between writers and advertisers. Om Malik's GigaOm and his other blogs have dropped their outside ad-sales firm, Federated Media, a startup run by John Battelle. Federated isn't just another ad network, nor is Battelle just another entrepreneur;…

Success has many fathers; failure is an orphan. Or so the saying goes. Google's second-quarter earnings — how to put this delicately? — sucked. At least compared to Wall Street's predictably overhyped expectations. Profits rose 28 percent, but that wasn't enough, and the stock fell 5 percent in after-hours trading,…