The internet-based "social music community," Last.fm, is coming to Xbox Live later this year. Microsoft has announced that Last.fm functionality -- which (among other features) recommends bands and songs to users based on the music they misten to -- will be integrated into the Xbox 360 dashboard, and that it will carry no additional charge for Live users. (It's not clear yet if this will be a Gold Member-only feature.)
http://www.joystiq.com/2009/06/01/last-fm-service-coming-to-xbox-live/youtube nākamā? :)