what.cd still had some of the best organization of any site, ever. It's hilarious that a company as big as Amazon has such a horrendous UI for browsing music, but lil what.cd had such a comprehensive and slick design
the recommendations were pretty well thought out even if not my cup of tea, and you could actually see what was new or active without having to worry about the piper being paid.
if you wanted to listen to your weirdly specific music tastes, it was perfect for that.