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Track Built on Open Specifications

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The Google Buzz team just rolled out the Track feature, which lets you subscribe to real time updates for search terms via PubSubHubbub.   It's pretty awesome, and builds on top of the work we've done for the Buzz Firehose.  A search query is just like any other URL -- say, https://www.googleapis.com/buzz/v1/activities/track?q=coffee+OR+tea -- and you can subscribe to it with PubSubHubbub using existing code.  In fact that URL will work in any PubSubHubbub-enabled client (like Google Reader).

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