In what may turn out to be an important development for interoperability between Internet services, online giant Yahoo has announced it plans to support OpenID 2.0, a standard designed to enable single-login access to Internet services—even if they’re operated by different companies. Yahoo plans to introduce beta support for OpenID 2.0 beginning on January 30 across sites like me.yahoo.com and Flickr, and offer OpenID support for the nearly 250 million active Yahoo users worldwide. In theory, that means these users could use their Yahoo IDs to log in to other sites that support OpenID 2.0. Yahoo is hoping to have partners Plaxo and JanRain working with the system from the first day of the public beta.
