First of all, big thanks for creating The Filter. It's a great idea and sure beats going to Amazon.com and endlessly clicking "Customers Who Bought This Item Also Bought".
I have to tell you though, your options for Genres are extremely limited. It's sort of like going to a small-town library and finding 12 categories for the 20 CDs they have on the shelf. I'm into electronica. But there are dozens of sub-genres. Have a look at the Wikipedia entry at the possibilities:
http://en.wikipedia.org/wiki/List_of_electronic_music_genres
Two other nit-picks:
- forcing users to pick 3 initial genres is silly.
- in addition to the option for: "I own this, so don't recommend it again." you should have one that reads something like, "Satan's upchuck. Don't recommend this again."
Thanks a bunch.