Klout- measure social influence

Tools for measuring the social influence from twitter, facebook, linkedin and so on are becoming more and more used. I posted previously about “Peer index“.
Another tool is Klout. In their mission statement they point out:
“Klout tracks the impact of your opinions, links and recommendations across your social graph. We collect data about the content you create, how people interact with that content and the size and composition of your network. From there, we analyze the data to find indicators of influence and then provide you with innovative tools to interact with and interpret the data.

The Klout Score is the influence metric. It measures overall influence through 25 variables broken into three categories; True Reach, Amplification Score and Network Score.”

To sign in you can connect your twitter and/or facebook account. Once signed you can get more detailed measurements and statistics.