High Quality Content by WIKIPEDIA articles! Clearspring Technologies is a web technology company based in McLean, Virginia, USA. Clearspring`s AddThis sharing platform reaches 1.2B unique visitors monthly and is used by over 10MM web publishers to virally distribute and track content across blogs, social networks and other web sites. Clearspring’s Audience Platform enables brands to deliver interest-based advertising to social influencers and intenders. The company has raised over $58M in venture capital from leading Internet investors Institutional Venture Partners, New Enterprise Associates, Novak Biddle Venture Partners, Steve Case, Nigel Morris, Miles Gilburne, and Ted Leonsis.