At least according to Dare Obasanjo they do if you compare similar offerings from Google and Yahoo. I don’t believe this is an isolated case. When I worked for a local ISP in the mid 90’s, customers new to the internet would call tech support over confusion between Internet Explorer and Windows Explorer.
Microsoft has so many brands floating around it’s hard to keep track of them all. Over the last year I’ve installed Messenger, MSN Messenger, Windows Live Messenger and Communicator. I have no idea when I should use one or the other. Good luck to Microsoft tech support on this one. And what does “Office Live” sound like but isn’t?
On another note, if Engadget is correct, you’ll be able to chose between 6 versions of Windows Vista.