03/08/2011 04:38 pm ET Updated May 25, 2011

Microsoft: The 15 Biggest Acquisitions And What Happened To Them

Last week, Microsoft announced it would shut down the Sidekick service for T-Mobile customers, which it got as part of its $500 million acquisition of Danger in 2008.

The shutdown put an end to Microsoft's hopes of getting any value out of Danger, which was supposed to bolster Microsoft's mobile phone strategy but culminated in the ill-fated Kin phone, which was canceled six weeks after launch.

But Danger was only the latest in a long line of acquisitions that didn't go as planned.

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