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.
A US study (http://pewinternet.org/Reports/2010/Social-Media-and-Young-Adults.aspx) has indicated that younger internet users are losing interest in blogging and switching to shorter and more mobile forms of communication. The number of 12 to 17-year-olds in the US who blog has halved to 14% since 2006, according to a survey for the Pew Internet and American Life Project.