industry online advertising mobile advertising web analytics founded 2004 headquarters vienna virginia united states key people richard harris ceo hooman radfar executive chairman & co founder dominique vonarburg co founder website www.addthis.com addthis is a media web tracking technology company based in vienna virginia united states . 2 the company operates addthis.com a social bookmarking service that can be integrated into a website with the use of a web widget . once the widget is added visitors to the website can bookmark an item using a variety of services such as facebook myspace google bookmarks pinterest and twitter . 3 the site reaches 2.1 billion unique visitors monthly and is used by more than 15 million web publishers . 4 the company changed its name from clearspring in may 2012 . 5 addthis was purchased by oracle corporation on january 5 2016 . 6 contents 1 history 2 investors 3 like button lawsuit 4 see also 5 references 6 external links history edit clearspring technologies was founded in 2004 by carnegie mellon university graduate students hooman radfar 7 and austin fath in pittsburgh pennsylvania . the company began as an r & d and consulting concern focused on commercializing research concepts around the semantic web and social networks . initial funding came primarily from grants and consulting projects as well as from friends family and a us 100 000 investment from idea foundry . its first product was semantic start page a customizable browser based dashboard that displayed information and news . users could add widgets from publishers across the web and share content across their social graph . addthis llc was founded in 2006 by dom vonarburg . by 2007 addthis had served more than 100 million widgets to websites with website growth at 100 percent per month and some two million views a day . 8 9 in 2008 clearspring acquired addthis llc with the intent of creating a single content sharing platform for publishers under one brand addthis . the combined platform per comscore was 254 million unique users . 3 10 clearspring upgraded addthis with widget sharing capabilities from launchpad then discontinued the launchpad offering reaching 600 million unique users by the end of 2009 . 11 in 2010 the company launched the clearspring audience platform a service for brand marketers to deliver interest based display advertising across the web which topped 1 billion unique users and was used by over 8 million unique domains . 12 clearspring acquired data science company xgraph in 2011 . 13 in september the company hired a new ceo ramsey mcgrory formerly of rightmedia and yahoo with co founder radfar becoming executive chairman . on may 10 2012 clearspring changed its name to addthis its most widely used product . the company launched three sharing and analytics tools trending content box follow tools and welcome bar 14 15 as well as supporting content sharing for pinterest and web intents . 16 17 18 in august the company began offering social login . 19 in september cfo richard harris took over as ceo . 20 in march 2014 the company was named number one on the top 30 syndicated ad focus entities by comscore . 21 on january 5 2016 addthis was purchased by oracle corporation for 175 million . before being acquired addthis had raised roughly 73 million to date . 6 investors edit in 2006 the company raised a series a investment led by novak biddle and zg ventures and relocated to virginia where it developed launchpad a widget sharing and tracking platform for publishers . the product attracted a us 18 million series c investment led by new enterprise associates . 8 in 2012 clearspring raised us 20 million in d round of venture funding led by institutional venture partners . the company has raised over us 58 million in venture capital . funding is from institutional venture partners new enterprise associates novak biddle venture partners rho ventures as well as from angel investors steve case ron conway and ted leonsis . 22 like button lawsuit edit the company is the subject of a lawsuit by rembrandt social media which is also suing facebook for the use of patents belonging to deceased dutch programmer joannes jozef everardus van der meer that involve the like button . 23 see also edit addtoany list of social bookmarking websites canvas fingerprinting sharethis references edit addthis.com site info . alexa internet . retrieved 2014 04 01 . company contact . addthis . retrieved 27 september 2012 . a b keane meghan 2008 09 30 . widget maker clearspring buys addthis . wired . archived from the original on 3 february 2010 . retrieved 2010 02 04 . addthis is the largest social infrastructure and data platform . company about page . addthis . retrieved september 20 2012 . clearspring.com . clearspring data . retrieved 2012 05 01 . a b dcinno . dcinno . retrieved 2016 01 06 . web 2.0 expo speaker bio hooman radfar . cmp technology and o reilly media inc. retrieved 2008 04 22 . a b article addthis.com reaches 100 million widgets served social bookmarking . . prnewswire . 2007 03 05 . retrieved 2010 02 07 . valentine mike banks 2006 10 11 . facilitating social media optimization smo . webpronews . archived from the original on 9 february 2010 . retrieved 2010 02 04 . darcy darlene 2008 09 30 . clearspring acquires addthis washington business journal . washington.bizjournals.com . retrieved 2010 02 15 . press release web widgets meet mobile video as clearspring and transpera join forces . clearspring.com . retrieved 2012 05 01 . press release clearspring largest sharing platform on the web launches audience platform for advertisers and publishers . clearspring.com . retrieved 2012 05 01 . clearspring ceo mcgrory on the acquisition of xgraph . adexchanger . retrieved 2012 05 01 . clearspring rebrands as addthis reaches 1.3 b users . siliconangle . retrieved 2012 05 10 . extending the platform with new traffic and engagement tools . addthis.com blog . retrieved 2012 05 10 . name addthis blog addthis blog pinterest available in the addthis services menu and some fun facts 1 addthis blog a step for open sharing addthis integrates web intents digital content tracking platform addthis adds social sign in feature to its suite of plug ins . the next web . august 21 2012 . retrieved august 22 2012 . overly steven september 29 2013 . the download data analytics firm addthis moves its financial officer into the ceo role . the washington post . retrieved 30 september 2013 . comscore media metrix ranks top 50 u.s. desktop web properties . about the team . team . addthis . retrieved 27 september 2012 . facebook sued over like button . bbc . february 11 2013 . retrieved february 11 2013 . external links edit official website retrieved from https en.wikipedia.org w index.php title addthis & oldid 743796583 categories social bookmarkingamerican companies established in 2004internet properties established in 2004companies based in vienna virginiahidden categories pages 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