Google, which does not give guidance, missed both Wall Street's top and bottom expectations for its December quarter by a hair and the punters turned vicious pounding it down around 50 bucks after-hours. Consensus demanded non-GAAP earnings of $4.44 on revenues of $3.45 billion. Google came in with $4.43 on revenues $3.39 billion. Those revenues figures are net of what's called TAC, Google's traffic acquisition costs, the money it pays its partners, which it this case amounted $1.44 billion or 30% of its ad revenues.