fyi onion, i couldn't see the image. so i used firefox developer extension to 'show image dimensions', and it is displaying as 10x1 pixel... hmmm
but that is a great idea. When playing, how would you select where you thought the word was?
I remember reading in the php man that when you click on an image you get $imagex and $imagey variables, guess you could use this to work out which character the user clicked.
inspired stuff mate.
ps. when are we going to get more nature photos on your website?