Friends are fun, but they're only on some websites. OpenSocial helps these sites share their social data with the web. Applications that use the OpenSocial APIs can be embedded within a social network itself, or access a site's social data from anywhere on the web.
Small learning curve for application developers
Apache Shindig Apache Shindig is the reference implementation of OpenSocial API specifications, versions 0.8.x and 0.9.x, a standard set of Social Network APIs which includes: * Profiles * Relationships * Activities * Shared applications * Authentication * Authorization