MS now craves good publicity, they organize things like Debian 8 release celebration (this cost them at least 50k), release first program that works straight away on linux ('code' for visual studio), sharp was open sourced, what a great time for maemo, because MS bought maemo from nokia. Open sourcing it costs them 0, and we can bring tons of good publicity just by cheering. Slashdot, reddit, you name it, will write about MS doing what nokia never could, so much more open they would be. Next announcement maemo programs run natively on windows 10