Here's a bit more about perverse incentives that make VCs' decisions less rational: http://www.danshapiro.com/blog/2010/08/vc-insanity-economics/ http://www.dan

Here's a bit more about perverse incentives that make VCs' decisions less rational: http://www.danshapiro.com/blog/2010/08/vc-insanity-economics/ http://www.danshapiro.com/blog/2010/08/vc-insanity-economics... The differences between Pinterest and GitHub are that: GitHub is more unique (it's not strictly social media and there's more homework to do); it's bootstrapped and negociates from a stronger position; VCs want to give start-ups more money than they need because that's how they get paid.