The silo. A plague on the house of the traditional corporation. So easy to form, so tough to change. Your organization is probably full of them. Bottlenecks and inefficiencies abound. A place where useful information and good ideas go to die. If only Team A knew what Team B really did, and why.
The rise of the real-time web. We're in the midst of a paradigm shift with the real time web emerging and supplanting existing technology.
Yammer is a private communication tool for your organization (think enterprise Twitter.) The era of pushing mass information to groups made up of people that largely don't understand / don't listen / don't care, will fall. (Sorry can't talk now, have to respond to an email - okay, I'm back.) In a very near future, these innovation-killers are replaced by permission-based feeds and real time posts, paving the way for a more valuable communication experience for followers.
Openness is a new rule for a new age of communication. The virtual water cooler is here to stay.
Can you believe he wore those pants?