The most commonly used share icon[according to whom?] was introduced in 2006, known as the Share Icon. It was created by WordPress developer Alex King and acquired by ShareThis a year later. They eventually licensed it under four licenses: the share-alike GPL and LGPL, and the permissive BSD license and Creative Commons Attribution 2.5. ShareThis produces widgets for accessing social networking services from a single pop-up menu. This icon is trademarked and was cause for controversy due to it being subject to legal take-down notices despite its license.
The Open Share Icon (or Shareaholic icon) is designed to help users easily identify shareable content. The icon aims to convey the act of sharing visually by representing one hand passing an object to another hand, while also representing an eye meaning "look at this." The icon was designed by the company Shareaholic, and made available under a Creative Commons share-alike license, with the restriction that "clear attribution and a hyperlink back to this page in a prominent location near to the image is required".
The Open Share Icon is supported by Ken Rossi (creator of the widely used OPML icons) and Bruce McKenzie (GeoTag icons), and is used by hundreds of websites and applications, including SmugMug, the Shareaholic Firefox addon, Wikia, NetworkWorld, Weather Underground, Princeton University. It is also proposed for use in the Mozilla Add-ons Directory.
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None of the audio/visual content is hosted on this site. All media is embedded from other sites such as GoogleVideo, Wikipedia, YouTube etc. Therefore, this site has no control over the copyright issues of the streaming media.
All issues concerning copyright violations should be aimed at the sites hosting the material. This site does not host any of the streaming media and the owner has not uploaded any of the material to the video hosting servers. Anyone can find the same content on Google Video or YouTube by themselves.
The owner of this site cannot know which documentaries are in public domain, which has been uploaded to e.g. YouTube by the owner and which has been uploaded without permission. The copyright owner must contact the source if he wants his material off the Internet completely.