The deal is done; Microsoft and Windows 7 Mobile are now strategically aligned with former giant of the mobile world, Finland's Nokia. Thus we have four major players – Apple, RIM (BlackBerry), Android and Windows/Nokia in the smartphone world. It's no bad thing: let them slug it out and the consumer is likely to be the winner. Yet not everyone is sanguine about the outcome and probably rightly so. Read Horace Dediu on the unholy alliance: In Memoriam: Microsoft's previous strategic mobile partners……