Attack Of The Music Communities (via Crenk)
Good list here, also a nice review of my music widget company Sonific: Attack Of The Music Communities | Crenk.
"Sonific - is a social network that offers a great way to promote your music, if you are an artist. It lets users put a free music widgets with your music on their sites and promote it to their own audiences, for free. In exchange, Sonific users get free music to use and listen to (download is not permitted) and make their site look cooler - while you get free advertising for your music."
