Venture capital backers of online social influence tracker Klout have reportedly seen the business bought by Lithium Technologies for $100m.
Klout has picked up at least $40m of funding to date that is known of and has held several other rounds of financing since a Series C in 2011.
Kleiner Perkins Caufield & Byers, Greycroft Partners and Institutional Venture Partners are all backers, as are ff Venture Capital and Venrock.
Lithium is venture capital-backed itself, having received more than $150m from firms including Shasta Ventures, Benchmark Capital and Emergence Capital Partners.
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