Google announces OpenSocial – open API for connecting social networks | B. Mann Consulting
Echoing Boris: OpenSocial API’s + Drupal are going to equal some might interesting distributed functionality that can get rolled into sites that don’t necessarily have a solid platform API. Think about it this way: if Drupal integrated OpenSocial containers, we could leverage applications on our Drupal sites that also work across social network platforms. They could bind to each other, providing a fan an experience where ever they happened to be that was consistent. Think of what this does to e-commerce.
[From Google announces OpenSocial - open API for connecting social networks | B. Mann Consulting]