WSJ – The Days of Klout and Clawback

Companies such as Klout, PeerIndex, Appinions and PeopleBrowsr, the creator of Kred, have over the last few years developed algorithms that measure the billions of times we tweet, post or act online; the reactions we generate; and the influence we therefore have on the Web. Importantly, and controversially, they can give each of us a score.

via The Days of Klout and Clawback – WSJ.com