Recently been playing around with www.music-map.com. A simple 'similar artists' finder.
Very basic interface - type in an artist name and it'll produce a floating "map" of names where the more similar the artist the closer the names are together. That's basically it. You can click on any name and it'll give you a new map based on that artist.
I'm always on the look our to discover new music as well as movies or books etc. that I might like, and the idea of "If you like that then try this" has always appealed.
So far it's been alright, seems to have the right idea.
Anyone else have any tool to recommend?