I saw this on If It's Hip It's Here and had to re-post it because I thought it was so clever and relevant - the details are pretty cut and dry so I'll just paraphrase from Laura Sweet's post (since it's for a public good and all). Laura writes:
Added by Carrie Leber on June 23, 2009 at 7:00pm — No Comments
Added by alice on April 4, 2009 at 4:26pm — No Comments
Added by Eugene on September 22, 2008 at 12:30pm — No Comments
Desktopography is a great site for free high-resolution desktop wallpapers.