Yahoo shows phase two of their social networking plan
All three components use OAuth to authenticate both the developer and the user on whose behalf the developer would be asking for data from the services. The development of Y!OS was noted when earlier this month, Yahoo switched over to a new universal profile, an external effect of the changes being made internally.
Yahoo is no stranger to attempting to create social networks, but its earlier effort, Yahoo 360, met with little success in an already crowded marketplace. Last year, Yahoo froze development of Yahoo 360 and said they were developing a new universal profile and associated platforms and tools for that. The announcement of Y!OS 1.0 appears to be the second phase of that process.