Romney’s tax rate error is likely more than you made last year

Romney had estimated his tax rate at 15%, turned out to be 13.9%. Big deal, right? Well, the difference is more than you made all last year.
— David Waldman (@KagroX) January 24, 2012

I know Kombiz will have lots more on this shortly, but this tweet from David Waldman of DailyKos nails one key dimension to Romney's taxes.
Update by MBH:
This is some awesome, though likely accurate, concern trolling by Paul Krugman on Romney's taxes:

He really needs to provide earlier years, if only to clear up suspicions that he began sanitizing his portfolio in preparation for his presidential run.