Chatter lets workers "follow" one another, collaborate on
projects, and exchange ideas. "The result is a constantly evolving discussion of office life that executives can mine for information about their companies," SFGate adds. "The social-networking
application marks an evolution in enterprise software, which has lagged behind consumer software in design and user experience."
As David Sacks, CEO of social-enterprise company Yammer, tells SFGate, this side of social is spreading like wildfire. In turn, it is fueling the "software as a service" category, which is already an $89.4 billion industry, according to Gartner.