Jamendo is a music website where artists release their music for free download, under a Creative Commons license. There are community features such as commenting, personal playlists, favourites, ratings, and forums, and from experience, it's a very vibrant community indeed.
I've been using Jamendo since it was launched, and a visit to the site today reveals a whole new redesign. It's much easier to download albums now (no more BitTorrent wizardry) and the whole site seems to be much faster.
Well done to the Jamendo team!