PeerIndex you can use to monitore the influence of subjects on Twitter . This is my own fingerprint.
About PeerIndex's mission:
As the social web grows more and more prevalent in the world, we've made it our priority to give individuals the right to own their data and the social capital that comes from it.
Our fundamental mission is to provide a service to help consumers benefit from their passions, interests and influence particularly with respect to the services they get from companies; and for brands and agencies to better identify effective and interested word-of-mouth advocates, that we call Influencers.