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Amortization expense for acquired intangibles was $163 million, $149 million, and $105 million in 2012, 2011, and 2010. Expected future amortization expense of acquired intangible assets as of December 31, 2012 is as follows (in millions):

Note 5—EQUITY-METHOD INVESTMENTS

Our equity-method investments include a 29% interest in LivingSocial. Summarized condensed financial information for this investee, as provided to us by LivingSocial, is as follows (in millions):

LivingSocial tested its goodwill and certain long-lived assets for impairment based on certain triggering events. Although its goodwill impairment test is not complete as of the date of this filing, LivingSocial believes an impairment loss is probable and has provided to us its best estimate. Completion of this impairment test by LivingSocial may result in an adjustment to this estimate.

As of December 31, 2012, the book value of our LivingSocial investment was $52 million. The summarized financial information is included for the periods in which we held an equity method ownership interest.

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