This plugin adds PubSubHubbub ( PuSH ) support to your WordPress powered site. The main difference between this plugin and others is that it includes the hub features of PuSH, built right in. This means the updates will be sent directly from WordPress to your PuSH subscribers.
T. Maciag, and D. Hepting. 2010 IEEE/WIC/ACM International Conference on Web Intelligence and Intelligent Agent Technology, 3, page 436--439. (August 2010)