Search engine diagram help

I didnt know where to ask this so i thought the blog would probably be best. There was a diagram showing how Google, Yahoo, Msn, Inktomi, DMOZ etc all interacted ..... in relation to each other. Does any one know the URL? Usually this would be a good GMAIL invite post but i don't have any and know doubt everyone has one now from the look of the iSnoop graphs. So the best thanks i can offer is a post with the link and you URL :o)