Add This – Collecting and Distributing Online Content
http://www.addthis.com/

The AddThis Buttons simplify the process of collecting and distributing content online. The Add This patent-pending Generic Content Collection System technology provides a unified method for interfacing with content collection services and aggregators. The Add This Button can be used in two ways: on websites and blogs or in the browser. This has been added to the sources page of my Bots Blogs and News Aggregators presentation blog.