http://siliconangle.com/blog/2012/12/31/the-secret-business-of-behavioral-marketing-from-social-widget-tools-like-addthis/Архивная копия от 14 января 2015 на Wayback Machine " AddThis, AddToAny and ShareThis. They offer a simple, free widget ... free sharing tools like AddThis widget will sell your sharing data to the highest bidder. .. The data collected from these sharing tools can be used by publishers for two primary purposes: to deliver more targeted advertisements or to provide more relevant content. AddThis, for one, is aggregating data about the sharing habits of Web users to sell to marketers in their efforts to create targeted online ads. "
http://siliconangle.com/blog/2012/12/31/the-secret-business-of-behavioral-marketing-from-social-widget-tools-like-addthis/Архивная копия от 14 января 2015 на Wayback Machine " AddThis, AddToAny and ShareThis. They offer a simple, free widget ... free sharing tools like AddThis widget will sell your sharing data to the highest bidder. .. The data collected from these sharing tools can be used by publishers for two primary purposes: to deliver more targeted advertisements or to provide more relevant content. AddThis, for one, is aggregating data about the sharing habits of Web users to sell to marketers in their efforts to create targeted online ads. "
[1]Архивная копия от 24 сентября 2015 на Wayback Machine / Forbes, 2010-02-22 (англ.) "AddThis has its own plans to sell user data"