I've been using Fedora on the desktop at home since it started and am pretty happy with it, one or two things that were not well-maintained have eventually dropped of, but there's generally been some replacement (I suppose that's life). I'm less interested in stuff like Btrfs though, and have been using KDE rather than Gnome for years now. It's not really clear how Fedora can be it's own thing, but also a test ground for RH. Additionally if the squeeze is being put on CentOS in production, then who would now consider Fedora for production and believe the same wont happen?