How do you backstab FOSS? You can't, there is no one to kill.The .NET Micro Framework has not been very successful, and yet it is key to the long term success of the .NET Framework as a one size fits all programming model for high level programming that still needs some performance and system-level ties. Soon we will be in a world where people want their thermostat to read back their tweets and browse Google Wave, so making the thermostat run on an 8051 with a couple KB of assembler to run it just won't cut it anymore. Also, even now most "smart devices" are reaching pricepoints where paying for a license per unit is just not a practical model anymore. MS could do better making money selling SDKs or services with lump sum fees than not making anything off that old fashioned model.So no, Microsoft's heart is hardly bleeding in this move, they are doing it in their self interest. But its a good thing for the FOSS community.