Microsoft is in talks to acquire Yammer for $1.2bn (£0.77bn), a "person familiar with the matter" has told The Wall Street Journal. It is currently unclear when the deal will be announced or ...

and Yammer Inc. today announced that they have entered into a definitive agreement under which Microsoft will acquire Yammer, a leading provider of enterprise social networks, for $1.2 billion in ...

[Related: SP500: Social Media Changing The Way IT Is Consumed, Says IBM] Spokespersons at Microsoft and Yammer did not immediately ... Salesforce.com said it would acquire Buddy Media, a developer ...