Check this past post from forum member matzyboy in a Photoshop comp years ago:
http://www.adventuregamestudio.co.uk/yabb/index.php?topic=17100.msg210575#msg210575
Now have a look at the recent flickr submission from P.J. Rush that's making the rounds on blogs...
http://www.flickr.com/photos/prom77/4605755892/in/pool-1012163@N22
I'm not alleging plagiarism; I'm sure Mr Rush came up with the idea on his own. But it just proves my theory that no matter how original you think your ideas are, someone on the internet has probably thought of them already.
I DO think the idea was stolen, just like mätzyboy stole copyrighted images. Internet, LOL.
edit:
Do you want to see more stolen work? www.youthoughtwewouldntnotice.com (http://www.youthoughtwewouldntnotice.com)