• by Mark Walsh  @markfwal, May 10, 2011

Social content syndicator Clearspring Technologies has raised $20 million in a fourth round funding led by Institutional Venture Partners (IVP) and including New Enterprise Associates, Novak Biddle Venture Partners, and AOL co-founder Steve Case. That  brings the company's total raised to date to about $58 million.

Clearspring's AddThis social bookmarking service is used by 9 million sites and reaches a monthly audience of more than 1 billion worldwide. The company's Audience Platform allows marketers to leverage the aggregate social data from AddThis to target advertising in real-time by interest, influence and intent. Clearspring plans to use the new capital to speed development of new publisher and ad products and finance strategic acquisitions. Read more here.