They can. They (Yammer) bought One Drum (http://onedrum.com/ http://onedrum.com/) only a couple of months back. (Checking my twitter feed, they arrived in SF f

They can. They (Yammer) bought One Drum (http://onedrum.com/ http://onedrum.com/) only a couple of months back. (Checking my twitter feed, they arrived in SF from Stirling (Scotland) on 24 April.) The guys are currently quite happy; tweeting: "Two startup exits in 12 weeks. I am Midas", "An analyst just asked Steve Ballmer if OneDrum played an important role in the acquisition".