One of the most frequently asked question from content publishers (that means all bloggers, you and me alike) is “How to make sure that my feed subscribers can read my latest update the moment I publish it?” This nearly real-time technology is not really possible in the past, but with PubSubHubbub (yes, it kinda sounds dorky), it changed the whole ball game.

Simply said, PubSubHubbub (aka as PuSH in short) is publish/subscribe protocol addon to the current Atom/RSS technology. It enables your RSS subscribers to instantly receive your feed as soon as you publish your content.
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