Dick nailed this one. What a yawner of an announcement. Visionaries my ass.
Unlike Google’s Account Authentication, Yahoo is allowing their service to be used for SSO and registration.
BBAuth is clearly targeted at Web 2.0 site developers, encouraging them to build apps on the Yahoo platform so that they get access to all those Yahoo users.. While I understand how this helps Yahoo strengthen their relationship with their users, it would seem Yahoo did not learn what Microsoft learned with Passport, as Yahoo is deepening their identity silo, rather then participating in the emerging identity infrastructure.