Because the preceived value that the company was supposed to bring (in terms of revenue) has never/will never materialize.  So Microsoft is writing off the entire purchase and removing it from its books.  Its an admission that they made a mistake in purchasing the company.  Its was good for the people at aQuantive as they probably knew the company was a loser and they sold out at an extremely high price.  The average selling price of companies in that space back in was ~ 1 billion, Microsoft overpaid by at least 5x.

I dont see how steve Ballmer is not fired.  He is spending Microsoft money recklessly (aQuantive, Skype, supporting losers like Nokia)

revenue of MS when Steve Ballmer became CEO: < 23 billion USD
revenue of MS now: > 70 billion USD

Number of employees when Steve Ballmer became CEO: 39k
Number of employees now: 70k

That is why.

Nokia is the world's 2nd best-selling phone behind Samsung - how are they losers?

Thats a gigantic loss. Ouchie.

Somebody hasn't been keeping up with Nokia's performance as of late. The company is rapidly declining in popularity, they won't be in second place for very long thanks to their Windows Phones bombing.

Because they have been losing customers for awhile now.  Nokia is on the way out like RIM.  Nokia might as well release another N-Gage.

has MS online service division profit once?just once

Actually the windows phone is doing okay. Old phones are ruining it though.

http://lmgtfy.com/?q=sales+number+Lumia

The deal that Nokia took from Microsoft was a score of the decade for Microsoft.

One of the biggest and best OEMs gets to push Windows Phone exclusively (when no one else wanted to) while Microsoft uses their camera and mapping technology for 1 billion dollars per year.

And then you take a look at Google and Apple and wonder where Microsoft could have been with a competent CEO.