From a link glossed over in a Slashdot article,
ZDNet interviews Microsoft's Rob Short.
You can always argue over how truthful it is, but it does show the giant waking up to modern server development practices. As a fan of
the world's most functional reference implementations, I'm amused that his points exactly mirror what the BSD projects have been up to- OpenBSD is a constant security audit, the FreeBSD SMPng project is all about fine-grained locking, and
accept filtering exists if you really need a kernel hack for HTTP. (Okay, *BSD SMBFS is no competition for SAMBA.)
Looks like they can 'ignore' the GPLed world, but have to move when the BSD-free implementations do! :-P