I've seen the "dividing the pie" calculator, but I'm more curious as to actual examples of equity splits between cofounders. Below's one link. Any more out htere?
http://www.startup-book.com/2008/10/30/equity-split-in-start-ups/
On a related note, has the initial equity split between Zuckerberg and his cofounders ever been revealed? I know that he had assembled a team of 5, just wondering what the other guys (all of whom I believe have since departed FB) ended up with.