Yahoo, with its 248 million active registered users worldwide, has announced that all of them will be able to use their Yahoo IDs as an OpenID to let them eliminate separate IDs and logins at Web sites that support the open, decentralized digital identity framework. “What Yahoo has announced today is the ability for people with accounts on Yahoo and Flickr to use those accounts via OpenID to login to nearly 10,000 different services around the Web,” said David Recordon, open platforms tech lead of Six Apart and vice-chair of the OpenID Foundation.