1. The metrics Klout uses for Facebook are very generic in nature and even an amateur can have a 50+ Amateur score by being active only on Facebook
2. It is not about being influential in your friends network. One can be influential quality only by connecting with people outside their network. This point goes especially for Facebook.
3.Klout's scoring met... (more)
I'm using Raven Tools to see a merged view of how social events on Twitter and Facebook directly impact Google Analytics data.