Microsoft has a web page describing the benefits of Windows XP http://www.microsoft.com/windowsxp/experiencemore/default.mspx. But if you go that page in Safari (under OS X) the page cancels itself from loading. Yeah, that really makes me want to switch back to Windows.
I found that MS page after googling a link mentioned in this article at Wired: Hide Your IPod, Here Comes Bill.