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+# PubSubHubbub plugin
+
+Enable this plugin to notify a Hub everytime you add or edit a link.
+ 
+This allow hub subcribers to receive update notifications in real time,
+which is useful for feed syndication service which supports PubSubHubbub.
+
+## Public Hub
+
+By default, Shaarli will use [Google's public hub](http://pubsubhubbub.appspot.com/).
+
+[Here](https://github.com/pubsubhubbub/PubSubHubbub/wiki/Hubs) is a list of public hubs.
+
+You can also host your own PubSubHubbub server implementation, such as [phubb](https://github.com/cweiske/phubb).
+
+## cURL
+
+While there is a fallback function to notify the hub, it's recommended that
+you have PHP cURL extension enabled to use this plugin.
+