There's LOTS of people looking for a good artist.
Yes, so much
As Ovicior said, you can use the classified section of GameDev, else you can try other websites (indieDb, ludust, etc...) There is probably a lot more but these are the main one I'm using after Gamedev.net and twitter
If you want to join a project you could always try directly contacting indie teams.
In any case if you have a good portofolio and some (a lot) spare time I'm sure you will find a team to work with