I saw this on B3TA and have been addicted ever since. As the quote says, there is almost always some second rate porn image, so be warned (PS, that’s not why I’m addicted).

Tracks the 30 most recent photos to be uploaded
to Livejournal. It’s interesting to just keep
refreshing, although every page is guaranteed a
cat, some porn, a teenager looking thoughtful
and someone selling cheap clothes.
http://www.portalofevil.com/lj.php