Case studies of equity splits between cofounders 
metachris: a really good idea i've read on HN was that:If you are 3 cofounders, take 10% each and divide the other 70% according to each participants activity over the next 3 or 5 years.The distribution system has to be defined before, but in general this sounds like a great way to split up and staying away from a lot of troubles and possible conflict points between the founders.