...
Google's social network, Orkut, is among the sites that will accept apps writtenhttp://www.news.com/8301-10784_3-9808145-7.html
using OpenSocial APIs, as is LinkedIn, hi5, Ning, Friendster and Plaxo. Other partners include iLike, Slide, Oracle and Salesforce.com.
A Google representative would not say whether Google had talked to Facebook and MySpace about joining the initiative or comment on why they were not involved.
The OpenSocial resources for developers and Web sites will be available at code.google.com/apis/opensocial.