What is Yammer?
Yammer is a simple, scalable solution that lets employees share and connect with coworkers in a private, secure enterprise social network. It’s like Twitter for your internal organization. Yammer is a tool for making companies and organizations more productive through the exchange of short frequent answers to one simple question: “What are you working on?”
Check out this quick, engaging and informative presentation on the What, Why and How of Yammer. Worth the 3 mintues it takes to view.