Re open sourcing Stack Overflow: Jeff actually pushed for this in the early days of Stack Overflow, but he got push back on it and they never did it. And to be fair, they have open sourced several pieces of it that make sense to utilize in other projects. And then of course they license the content under creative commons, which I find quite admirable. Also, I don't think open sourcing Stack Overflow really helps much as far as the point he is making... Stack Overflow shouldn't really be an element in your stack, unless you are developing a stack app. Thus almost nobody really needs the source to overcome programming obstacles for their application.