Via TechCrunch:
The new project, called OpenSocial, goes well beyond what we’ve previously reported. It is a set of common APIs that application developers can use to create applications that work on any social networks (called ‘hosts’) that choose to participate.
Note, “on ANY social networks that choose to participate.” Currently the participating networks are: Orkut, Salesforce, LinkedIn, Ning, Hi5, Plaxo, Friendster, Viadeo and Oracle.
Nope, no Facebook. I guess the idea is to “out-open” Facebook. Great, just when I’m getting my feet wet thinking about developing Facebook apps. More details on the TechCrunch page.