Here is the list for December:

Top U.S. Music Services On The Web (in unique visitors, December, 2009)

1. Vevo: 35.4 million
2. MySpace Music: 33.1 million
3. AOL Music: 29.0 million
4. Warner Music: 23.3 million
5. MTV Networks Music: 17.6 million
6. Yahoo! Music: 16.4 million
7. Jango Music Network: 9.6 million
8. ToneFuse Music Network: 8.3 million
9. MSN Music: 6.6 million
10. Rhapsody: 6.5 million

To see the full article, go here

So it makes sense that if you want to give your music some exposure,
you probably want to get it on some of these sites.

Interesting to note though is that the number one site, Vevo,
is actually a joint venture involving Google and that its main source
of visitors is Youtube.

YOU ARE THE CONTENT, repeat You ARE THE CONTENT