"Much as Google’s search engine attempts to rank the relevance of every web page, Klout—a three-year-old startup based in San Francisco—is on a mission to rank the influence of every person online. Its algorithms comb through social media data: If you have a public account with Twitter, which makes updates available for anyone to read, you have a Klout score, whether you know it or not (unless you actively opt out on Klout’s website). You can supplement that score by letting Klout link to harder-to-access accounts, like those on Google+, Facebook, or LinkedIn. The scores are calculated using variables that can include number of followers, frequency of updates, the Klout scores of your friends and followers, and the number of likes, retweets, and shares that your updates receive. High-scoring Klout users can qualify for Klout Perks, free goodies from companies hoping to garner some influential praise." - × × ×