I'm now very fond to see old ambitious project being alive without trendy interest and funding. I don't even think HURD is as revolutionary as it was when it started, but still a very (very very) nice contribution to biodiversity. And, of course, the OSS spirit embedded within.

I suggest people to look for Samuel Thibault past talks about HURD to see how different layering of components open for fine usages (mounting remote .isos from FTP without suffering too much).