Perhaps you have heard of the Google’s pubsubhubbub protocol (PuSH for short) that was unveiled last year. It is basically an extension of an RSS. Instead of Google and other various services pinging your site for new content, they can subscribe to your site; you tell them when the new content is published, and they can display it as soon as it is published.
Recently WordPress has introduced the PuSHPress plugin, which adds the PuSH hub to your blog. So what does that mean for you? Simply by installing this plugin you’re opening up your blog to get indexed almost instantaneously by Google Search, and picked up by other services, such as Google Reader, Netvibes, FriendFeed, and many others. New sites are starting to use this protocol every day. So every time you publish a new blog post it can be picked up in real time by all these websites. Best of all, there is nothing to configure. Just simply install the plugin and it works.
So, if you have a WordPress blog, or a developer who builds these sites, adding the PuSHPress plugin seems to be a must nowadays. Perhaps it will become a permanent part of WordPress in later version. In the future, this protocol may be used by countless applications that we cannot yet imagine. If you run a custom built blog, check out the Google’s code page on how to add the PuSH protocol to your website.