Another way to market your book is to enter cover art contests!  Wouldn't a cover art award be great to promote on your website?  After you enter, make sure to spread the word everywhere so that you get lots of voters to the site(s)!!

Here are some I have found:

http://www.booksinsync.com/bookcovercontest.html
http://yougottareadcovers.blogspot.com/           

http://yabookqueen.blogspot.com/2009/09/contest-policy.html              

http://thatcovergirl.wordpress.com/      

http://www.tjbook-list.blogspot.com/   

http://www.thebookdesigner.com/e-book-cover-design-awards-submissions/

http://thenewcoveycoverawards.blogspot.com/

http://allthingsurbanfantasy.blogspot.com/ (I think their contest is in December, but they have lots of categories!)

What other cover art contests do you know about?  Please post a link to it!  Thanks!  Cheers!  Jan