- OpenIDisadecentralizedidentificationprotocoldesignedtobeusedacrossmanyWebsites.AmongthemaintechnologiesthattheProjectfocusedonwereOpenID,OAuth,RSS,OPML,microformats,RDF,apml,andXMPP.WhenGoogledecidedtosupportOpenIDayearearlier,itbroughtmorethan100mil...
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