Earlier quoted context omitted.
I'm assuming Seattlites would be able to confirm. However as much discussion we've had about the internet remembering everything, I can't find anything in Google to confirm "Microsoft Coffee" except for this site, discussion of it on Reddit 13 hours ago.
Remember that the prank preceded the mainstream web, and MS PR clearly went to great lengths to cover it up. I don't think the internet was "remembering everything" yet at that point
Google has lost a lot of old posts from those days, but I'd be surprised if it would have lost all of them.