I like the idea of the user ratings on the beatmap listing page, where people can rate the song from 1-10 stars, but it seems like nobody is using them at all. I never do it because I always forget to go back to the site after getting a song. I think it would be really nice to have some kind of place on the results screen where you can rate the songs, so people could do it a lot more often! Also, it would probably be nice to sort songs by your own chosen rating and the total average rating.