Distros that don't include Gnome by default and use the defaults when it is installed or built. I assume Gentoo, Arch, *BSD et al. Might be wrong though.
In arch they use the gnome defaults. So if you install gnome nautilus is in this "Spatial" mode, which renders nautilus completely useless. It is easy to change it to the browser mode that you might be used to as default in ubuntu or suse, but that doesn't justify it being the default. I'm glad the developers have finally realised what idiots they have been and have changed it. Not that it matters much to me as I use pcmanfm.