It wasn't set to be a social network like Yammer, but solely on messaging.
From my view it works in quite different way for users to discuss on this than on Yammer.
But thanks for mentioning, probably need to show the differences for people to be interested.
Yammer started out as Twitter for the enterprise and soon morphed into Facebook for the enterprise after it was clear that clearly threaded and grouped conversations helped the user stay in context and follow multiple important conversations. Sorry, didn't mean to be inflammatory.
Got it. Guess I was a bit late to Yammer as it was already morphed then. Wish I knew and took this into consideration early. Still useful now, and thanks a lot for the share.