Klout and various measurements of influence are fun. I love to see where I score on them, but there's a computer algorithm behind the calculation. If there's an algorithm, it can be gamed. Even if it's not gameable, you have to take a leap of faith that the number of followers, retweets, mentions, whatever really mean something.
I know that I am very popular in Holland, in fact I have visited Amsterdam several times to publicize my books. I have a great publisher in Holland and they have published all of my books in Dutch.