Now, this is really a great use of such open data and results in a wow experience. Lijit, a social blog search tool, and some other services have been using this data since a long time. If you are a developer, you can also grab this data using our APIs or microformats.

But, one way open is not enough!

While Google lets you import data in, you cannot export the same data out. Looking forward, I hope Google, Facebook, Yahoo and others will become more two way open and will drive creation and adoption of such open standards.