Google OpenSocial: Social JavaScript APIs

Google launched OpenSocial, a site about technology for developers. OpenSocial provides a common set of APIs for social applications across multiple websites.

OpenSocial is built upon Google Gadget technology. It is currently being developed by Google in conjunction with members of the web community. The ultimate goal is for any social website to be able to implement the APIs and host 3rd party social applications.

There are three main APIs that you now have access to:

• People Data API: You can get access to owners and viewers, and their friends
• Persistence Data API: Store simple hash table data for the users using your application
• Activities Data API: Like the Facebook News feed
  

Here you can see Google Campfire One introducing OpenSocial.

You can learn more about OpenSocial here.