0 A look at the <a href="http://www.igvita.com/2009/06/29/http-pubsub-webhooks-pubsubhubbub/">emerging Webhooks & PubSubHubbub HTTP callback implementations</a> and how they enable easy, distributed, web-scale PubSub.. with Ruby code samples and example of new PubSubHubbub Ruby gem. 2009-06-29T16:19:35+00:00 false 2432 2009-06-29T16:20:09+00:00 9