Windows Live ID agora é um OpenID Provider!

direto do blog:

Windows Live ID Becomes an OpenID Provider

Windows Live ID Commits to Support OpenID

Beginning today, Windows Live ID is publicly committing to support the OpenID digital identity framework with the announcement of the public availability of a Community Technology Preview (CTP) of the Windows Live ID OpenID Provider.

You will soon be able to use your Windows Live ID account to sign in to any OpenID Web site!

The Windows Live ID OpenID Provider (OP) enables anyone with a Windows Live ID account to set up an OpenID alias and to use that alias for identification at an increasing number of OpenID 2.0 relying party sites-for example: Plaxo, Pibb, StackOverflow.com and Wikispaces.

Windows Live Dev : Windows Live ID Becomes an OpenID Provider

já pensou no alcance disso?  só no Brasil sao uns 40M de Live ID’s!!!