Part of the shortlink microformat effort effort. Per the microformats The microformats process this page is here to document existing real world visible web publishing examples of pages and parts of pages (like blog posts) publishing short links (references to shortened URLs/links) for themselves, whether or not they actually use rel="shortlink" or any other particular rel value (e.g. Flickr.com use of flic.kr, various wiki pages like http://tantek.pbworks.com/CommunicationProtocols and hCard supporting user profiles)
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