First Yahoo! & Microsoft both offered me upgraded versions of their popular email destinations on the same day.
Now, they've done it again! Yahoo! has just unveiled its AJAX powered homepage while Microsoft has added Firefox support for the Windows Live Mail Experience, a niftier cousin to the vanilla Hotmail Classic View. And if you haven't guessed it yet, these upgrades once again happened on the same day...today!
Especially heartening is Microsoft's gradual support of the open source phenomenon. Their open source labs are hard at work trying to make interoperability a reality. If it treads the right course, its victory will be decisive. I was, am and will remain its greatest devotee!