writes "Confirming the rumor that emerged earlier this month, Microsoft has bought enterprise social networking software maker Yammer for $1.2 billion. Yammer will become part of Microsoft's Office Division."
If you're not familiar with Yammer, it's essentially a messaging system that gives more control to administrators than does using an outside company's service, like AOL's AIM. "Enterprise social networking software," as Wikipedia explains it
, means that Yammer "is used for private communication within organizations or between organizational members and pre-designated groups, making it an example of enterprise social software. ... Access to a Yammer network is determined by a user's Internet domain, so only those with appropriate email addresses may join their respective networks."