"Recently there has been a bit of a hubbub over
Microsoft forbidding the use of software using the GPLv3
open-source license and all similar licenses on Windows Phone 7
(WP7). Then, the boys from Redmond realized that by the strict
letter of their new rules they had just forbidden the use of some
of their own open-source applications on WP7. As Homer Simpson
would say, "D'oh!"
"Microsoft may be slow, but they get there eventually. Shortly
after their error was pointed out, they explained that some other
open-source licenses, including their own of course, were actually
OK on WP7. And, oh by the way, they might consider opening WP7 up
to software under other licenses. That's big of them. Apple, of
course, has long forbidden the use of GPLv2-licensed software."