Clearspring Technologies is a leading widget provider, offering technology platforms that create, distribute, and track widgets for developers, advertisers, and some of the largest media companies in the world, from Lionsgate to Virgin Mobile. (Widgets are mini-applications used to customize a user's online experience -- think games, quizzes, videos, audio players, and other Web content that can be shared.) Marketers place ads inside Clearspring's widgets on blogs and top social networking sites, such as Facebook, MySpace, and Bebo.