Ugh. This is a good example of how self-promoters operate. Biz Stone makes it sound like it's "him & Ev". But since this came out there have been more revelations about the early days of Twitter. Biz Stone lobbied Ev to get his title inflated to co-founder but the equity stake tells all: 3% (versus Jack Dorsey's 20% and Ev's 70%). "Stone's co-founder title didn't get him a ton of equity, but it did afford him the ability to say he was co-founder of Twitter. That became priceless later on..."[1]
[1] http://www.businessinsider.com/how-biz-stone-became-a-twitte...