Archive of Our Own, AO3 - the fanfiction database recently nominated for a Hugo, has perfected a system of tagging that the rest of the web could emulate.

"There are two main ways of dealing with the problem of tagging proliferation. One is to be completely laissez-faire—let posters tag whatever they want and hope searchers can figure out what words they need to look for...

Archive of Our Own, AO3 - the fanfiction database recently nominated for a Hugo, has perfected a system of tagging that the rest of the web could emulate.

"There are two main ways of dealing with the problem of tagging proliferation. One is to be completely laissez-faire—let posters tag whatever they want and hope searchers can figure out what words they need to look for...