No one in their right mind would buy a Windows phone right now. WinPhone7 is lightyears beyond 6.x. It will be interesting to see those number in 6, then 12 months from now. There are two big things on the horizon that will change this. 1) Sales of WP7 starting this fall and 2) iPhone availability from Verizon (January is rumors are correct).

One small correction. There is no WinMo7. It's Windows Phone 7. There are no plans to make that version of the OS available to other devices.

>In current channel movement (as of August), rather than installed base, the numbers are (http://www.redmondpie.com/android-is-now-the-number-1-selling-smartphone-os-in-united-states/):
>
>Android: 33%
>RIM: 28%
>iPhone: 22%
>
>That's 83% of movement in the channel going to non-Microsoft. WinMo7 has a difficult row to hoe.
>
>The good news is that, with the ability to write MonoTouch .Net apps for Android and the iPhone, WinMo7's success or failure should not impact .Net developers.
>
>Hank