AddThis was a free social bookmarking service that could be integrated into a website with the use of a web widget. Once the widget was added, visitors of a website using the service could bookmark or share an item using a variety of services, such as Facebook, MySpace, Pinterest, and Twitter. AddThis collected users' behavioural data, even if they do not share anything.[2] The site reached 1.9 billion unique visitors monthly and was used by more than 15 million web publishers.[3] The service operated under companies including AddThis, Inc., AddThis, LLC, and Clearspring Technologies, Inc. until the company's acquisition by Oracle Corporation on January 5, 2016.[4] AddThis would continue to run until all services were terminated on May 31, 2023.[5]