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LinkedIn members to get more Klout

It looks like influence measurement startup Klout has completed the social networking trifecta. The San Francisco company announced Tuesday it now incorporates LinkedIn data into your Klout score, as well as Twitter and Facebook.

What’s online influence really worth? For Klout, $8.5M

Klout, a startup that helps people measure how influential they are across a variety of social media sites, announced today that it has scored $8.5 million in a round of funding led by Kleiner Perkins.

Study: Social influence switches on and off among Facebook users

A new study on the behavior of Facebook users claims that users influence each other when it comes to installing applications, but only once an application has exceeded a certain level of popularity. Under that level, the effect of social influence is negligible.