JasonJ, commenting on Charlie Stross’ post The Death of Genre, said this:
Tags, as long as they are accurate, are just what I’ve wanted. I long ago stopped bothering to seej just fantasy or just sci-fi – there are plenty of sub-groups within both that I just don’t care for, but there’s no quick way to spot them, even with the book in my hands. Tags could do that for me. I don’t need a genre, I need a range of subject matter.
And genre is a rather subtle limiter too. I would mentally classify quite a number of favourite 18th, 19th, and early 20th century classics as fantasy, but according to the world at large they are simply “literature” (and owing to their age and establishment as classics, people I speak to just can’t seem to wrap their heads around the idea of, for example, the works of Dumas or Haggard being fantasy). If I went looking by genre I might never find them. Remove genre and just use tags like “adventure”, “swash-buckling”, “futurism”, or even “bodice-ripper”, and finding books to match your interests becomes so much easier.
As a virtual DJ, I myself find that the existing Genre field in ID3 tags is increasingly restrictive. Obsolete, even, given the way musical styles subdivide and combine, not just on a per-album basis but a per-track one as well.
Increasingly, a song, article, image – or book – will reflect the influences of more than one traditional genre. For instance, I have a catch-all genre I call ‘bronycore’ (i.e. music created by fans of the TV cartoon My Little Pony: Friendship Is Magic), but in that genre are tunes whose style ranges from classic filk (e.g. The Beatle Bronies) to dubstep, chiptunes, rave… you get the idea, crude as this example is.
However, tags are only as good as the tagger. An item may emerge with no tags at all, or be plastered with as many tags as the tagger thinks are even remotely relevant.
Personally, I would prefer a more subtle system of weighted tags: searchers can add to the weight of tags they consider most important, or irrelevant to the content. Yes, such a system would be open to abuse, but so are any other cataloguing fields. (Twice I have obtained completely misnamed files through Songr. Not good when you’re performing live!)
Whether or not such a system is feasible in the real world, however, is open to debate.