ReadWriteWeb

Google Reader is about to get much faster for developers. You'll be pleased to note that Reader has just adopted the PubSubHubbub protocol for shared items. This means that instead of repeatedly requesting that Reader's shared items reload from the server, the feed automatically updates via a distributed hub model. Rather than waiting on the back and forth pings of update notifications and polled Atom URLs, feed subscribers can receive both the notification and the message from a hub.