Lots of interesting stuff here about harnessing social media for business. I think we're going to see a lot more about how social can help businesses communicate and share more freely and usefully in 2013. Email is becoming, in my mind, less and less useful. It's a blunt object given where technology is at. An internal social media network that's always on and allows real time collaboration (what a horrible expression) seems much more human and useful than the ping-pong ball that email's become.
Check out http://hootsuite.com