Example of a URL: http://www.peoplesregime.com/~turtyl/fatass.gif
How do you get it? Well, in Firefox you can right-click on an image and say "Copy Image Location." Then you can paste it in the box above. In Internet Explorer, you have to right-click, go to the Properties of the picture and then cut-and-paste the URL. Clearly, Firefox is the way to go.
This pane would be full of awesome stuff if you were logged in. Instead, you just get this sad, lonely message supported by a strange little set of ads.