Yammer is the "Twitter" for businesses.
I'm using it in our department to share common files... the kinds of identity images frequently used in PowerPoint presentations or Word docs.
It's already restricted to the "@berkeley.edu" community, but you can also set up a Private Group visible only to people you invite in. I don't quite remember how I got in, but try signing in here... Sign in with your berkeley email.
More About Yammer
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When Is Social Networking Kosher In The Office?
National Public Radio – November 24, 2008
"Essentially, what it's allowed us to do is have a lot more conversations without necessarily having meetings," says David Sacks, CEO of Yammer. "And you want to reserve e-mail for communications where you really do require a response. But if you just want to have a free-form discussion, Yammer really excels in that."
Read and listen to more at National Public Radio
