There was a blog post here by that title or similar. May replace "Facebook" with the "next big thing" or "accelerator" with "Y Combinator". But my Google search skills and HNsearch isn't helping me out here. Anyone bookmark it?
Sorry Isaac, but it was on a blog with much similar posts to yours and swombat's. Btw, one of my all time favourite posts actually is your "Two paths to greatness" one. +1 Thanks for that.
Is it this? One of the answers matches your phrasing.