IBM Milks Lotus as It Tries to Update Software Group - WSJ.com

From an IBM Lotus business snapshot

"IBM is trying to do the same thing with Lotus by folding it in with social-media tools that address more current needs. Those tools, grouped under its Connections software, let companies create corporate versions of Facebook Inc.,with user profiles, blogs and streams of news updates that co-workers can follow and learn from.
The challenge for IBM is that revenue from the business is puny compared with the revenue from Lotus. In the first half of 2012, IBM made $55 million selling social-business software, giving the company more than 11% of the market, according to IDC.
The market is also competitive, with rivals including startups Jive Software and Lithium Technologies Inc., as well as Yammer, which Microsoft bought last June for $1.2 billion in cash."

IBM Milks Lotus as It Tries to Update Software Group - WSJ.com