If you have been considering selling your art online, you ought to check out the reviews by Dan over at Empty Easel. Here is a description from the site:
EmptyEasel.com isn’t really about me or my art. Instead, it’s a place where I hope to help people understand art a little better. Whether you’re a new artist, just interested in art, or even an established art professional, my goal is for you to make EmptyEasel.com your daily resource for art information.
Among other topics, Dan has reviewed a number of the top sites for artists to sell art online. He’s done some insightful research into which of them are best according to independent traffic analysis. There is lots more to the site including many useful links. All in all, this is a site where you will find your time spent on it well worthwhile.