Today I discovered pybliographer, a decent (if not perfect) BibTeX management tool. Surprisingly, Ubuntu had a package for it already (as does Fedora and Mandrake I think), so it was a breeze (-y badger?) to install. I think I might just start maintaining a huge single BibTeX file and then pull out paper-appropriate subsets as I need them. I’m hoping that they add folders or something to later versions.
When I get my schmancy new Mac laptop I’ll use BibDesk, which looks even better.