Google provides 2 OpenSocial implementations: Orkut and iGoogle. These correspond to different user demographics and use cases. I go over the user base demographics and policies for these OpenSocial sites.

1. Google OpenSocial Platforms
Orkut and iGoogle

2. Patrick Chanezon
Developer Advocate
chanezon@google.com

3. A standard for everyone
This work by Eliette Chanezon is licensed under a Creative Commons Attribution-

4. Making the web better
by making it social
How about Google OpenSocial
implementations?

5. 2nd social network in the world
>60M users
Big in Brazil and India
Use case: self expression, communication
Status:
OpenSocial available for users in India
since last week
Directory limited to 19 applications for
now

6. Orkut Stats
http://www.orkut.com/MembersAll.aspx