Seconded. I know several people who use Fedora. They refer to it by number, not by name. I thing the only possible value of release names is to provide something for bikeshedders to fight over while other people work.
Because if you search for "Debian 6 foo", you should only be seeing results that contain that exact phrase (on Google, anyways).
This being said, I'm not using a distro that discards a version every 6 months, so I don't need to keep a 'continually scrolling' list of codewords in my head.