It looks as though Amazon has prevailed in its case with the IRS over back taxes. You know the IRS can't be happy about not getting its hands on that $1.5 billion.
Amazon has successfully emerged from a lawsuit brought by the Internal Revenue Service, saving the company from a huge potential tax bill. A federal tax court judge ruled last week that the agency’s determination that Amazon’s re-assessed tax liability for 2005 and 2006 of $1.5 billion plus interest was "arbitrary, capricious, and unreasonable." Had Amazon lost, it would have had to pay that full amount, plus interest, and perhaps more for subsequent years.