PuSH Bot lets you receive notifications via XMPP of updates to feeds that support PubSubHubbub (commonly abbreviated to PuSH). This means that you can receive updates from Blogger, TypePad, Movable Type and LiveJournal blogs, Google Reader shared items, any FeedBurner feed and many other sources to Google Talk or any other Jabber/XMPP account.

It is running at push-bot.appspot.com.