"...here's the surprising reason: IE6 as user control. Some managers have realized that IE6 works fine for required enterprise applications, but makes browsing newer social media sites an unpleasant experience."

“I hate to say it, but ‘It’s not Facebook for the enterprise, stupid,’” Zingale said. “That’s a great social tool. But it’s not about connecting 200 of your friends together, and checking out their photos and videos and talking about what you had for dinner last night. It’s about getting your work done.