Another interesting digital music blogDigital Music Collector. The author is working on an interesting project called MusicGenreTree, a community project to construct a complete tree of musical genres with more information besides. It'll be really interesting to see how they get on.
Maybe bliss could categorise music according to this tree? In the post Defining a standard music genre tree the author describes three existing genre trees available on the Web (and I added a fourth, allmusic, in Genre: separating your 'epic doom metal' from your 'free funk jazz'). It would be great to be able to pick the tree of your choice, and have all your music categorised against it automatically.