- "garden hose" a random sampling of public Google Buzz posts with a query rate that'll come under free quota limit for Google App Engine. As such, many more developers will be able to easily get their hands dirty on this great source of real-time data.
- A API to return the people associated with a particular activity query. That's, you can now search for people who recently created a public post that includes an arbitrary string or related geo-location.
- Users now able to discover and explore content related to a particular post. With new API, developers can now access and deliver Google search results related to topic of that post. For e.g., given this post about Coworking Day, you could add '/@related' to the end of the self link to get this set of related links.
More Info: Buzz API documentation