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OpenID is a decentralized system to verify one's online identity. While it is not intended to prevent spam or create a trust metric, it solves the single sign on problem without relying on any centralized website to confirm digital identity. Since OpenID is decentralized, any website can employ OpenID software as a way for users to sign in. On OpenID-enabled sites, users do not need to register and manage a new account for every site before being granted access. Instead, they only need to be previously registered on a website with an OpenID "identity provider". They can also link to this identity provider from another website they own and log in using that website's URI instead, allowing them to connect their identity to their website. A website which accepts sign-ins from OpenID is called a "relying party." Kevin Rose, speaking here at the Future of Web Apps conference in London, just announced that Digg will adopt the OpoenId decentralized digital identity platform. Don’t expect this right away though - adoption will begin “later this year” according to Rose. It’s definitely time to declare OpenID a winner and the hope for a single-sign on world a reality. Yahoo, LiveJournal, and Wikipedia are among the other services that have previously announced adoption.