Unlike its predecessor, Yammer 2.0 lets you see who is online and "follow" specific conversation threads to have relevant messages added to your feed. You can use a new poll app to post questions ...

Yammer is rapidly outgrowing its current space on Townsend Street -- the company has grown more than 4x since January 2011, and now has more than 350 employees in San Francisco.

Yammer promises to be a great way to cut down on long tedious over shares by e-mail. It's fast, efficient and instantaneously gets the latest messages out to everyone within the company in one ...

Microsoft (MSFT) agreed to buy online social network firm Yammer for $1.2 billion in cash, which will allow the software company to offer a service like Facebook's to corporate customers.