Today we're happy to announce initial support in FeedBurner for the PubSubHubbub protocol. 'Hubbub is an open specification in draft for web-scale publish and subscribe. The protocol can be used to transform any existing Atom and RSS feed on the web into a real-time stream."

As of right now, burned feeds with the PingShot service enabled are automatically enhanced with the PubSubHubbub protocol. That means for many of our publishers out there, your existing feeds are available as real-time streams right now. Like, immediately. This very moment.

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