On BTC-E chat I saw someone talking to a guy with 10 6950s that's been mining since the peak and not selling.  He's holding 150 BTC.  For those playing the home game, that's a minimum of $250 in power and $3500 in video cards.  And a current market value of $390 for his output.  IMO this is the norm.  Lots of miners are in this boat, and they will keep on mining until they simply can't deny they've lost money.  Might take hardware failure for that to sink in.

The high hash rates on deepbit confirm it.