The service also identifies 5 topics one is "influential on." I consider myself well-read in some aspects of technology as well as religion and spirituality. However, I have never been to Reno nor Yale. I do not know much about teeth and orthodontology (aside from avoiding the dentist lately).
I don't have much faith in klout's ability to determine if I am influential or authoritative on a topic. It's an interesting concept, but in reality, our sphere of influence is much greater than twitter and other social network mediums.