What is your position on Microsoft's contribution of 20klines of code to the Linux Kernel and 3 Linux drivers?

[eluser]Unknown[/eluser]
As Microsoft begins its slow migration to the integration of open-source software into it's system, amazing things have happened. Most recently, Microsoft released 20,000 lines of code as a contribution to the linux Kernel which include 3 linux-based device drivers, all in the hopes of enabling Linux/Unix distros to be virtualized into programs such as Hyper-V for cross platform integration.

What is your opinion on this? Do you like it or not, and why?