As of today, my blog is now using the PubSubHubbub protocol to PUsH out content. This, in addition to the future addition of hAtom microformats will ensure that content is standards compliant and semantically relevant.

Here’s the rundown on the new content syndication technology, directly from Google.

PubSubHubbub is a simple, open, server-to-server publish/subscribe protocol as an extension to Atom and RSS. Parties speaking the PubSubHubbub protocol can get near-instant notifications via WebHook callbacks when a feed they are interested in is updated.
The protocol is decentralized and free. No company is at the center of this controlling it. Anybody can run a hub, or anybody can publish or subscribe using open hubs. Below is the list of products at Google that have already adopted PubSubHubub– and more are on the way!