One of the most significant steps of the promising PubSubHubbub protocol is, Google Reader started to support PubSubHubbub. That means, a post on this blog will appear in Google Reader (and Google Buzz in Gmail) immediately after I click Save. That is cool. I am happy I finally enabled PubSubHubbub support on this blog the other day.
Again, welcome to the world of real time web.
Update February 21, 2010
P.S. My test shows, this update appears in Google Buzz about 10 seconds after, but it took about 1 minute to appear in Google Reader. Maybe it is because of cache (enemy of real-time web), or high volume?