Earlier quoted context omitted.
It's easy to justify as a security measure, given the amount of malicious ads trying to serve up exploits.
Maybe they don't browse the web either, I mean... unless it's 100% justified for work...
It is the help program of Visual Studio and other apps.
Managers would check http://msn.microsoft.com/ which had their stocks in it.
I only used the web for work, nothing else. I didn't use my company email for newsgroups and website signups I used my Hotmail account instead that kept the spam there.