As blogging and ways to monetize high-traffic content evolve, the pairing off of power bloggers into friends, allies, and business partners becomes more interesting.The lotto-sized win in the battle for high-power friendships is, as everyone knows, Mike Arrington. To be a FOA (friend of Arrington) is to be anointed into a lucrative Web 2.0 economy.As I watched the Winer-Scoble-Israel vs. Arrington-Feldman-Calcanis feud this past week, I had some of my own observations about the tricky ...