By Tim O’Reilly

Google’s announcement today of the Social Graph API is a major step in the development of what I’ve called “the Internet Operating System.” In a nutshell, what the Social Graph API does is to lower the barrier to re-use of information that people publish about themselves on the web. It’s the next step towards the vision that Brad Fitzpatrick and David Recordon outlined in Thoughts on the Social Graph.

How many of us feel frustration when we’re asked to recreate the same…