There’s a new way to provide syndication feeds for websites. JSONFeed does basically the same thing as the traditional RSS or Atom feed, but instead of using XML it uses JSON. The big advantage of this is that the file size of the feed is much smaller and processing of the feeds can be much more efficient.
You can enable it now on WordPress using the JSONFeed Plugin for WordPress. You can find it by searching for JSONFeed via the Plugins->Add New option in the WordPress Administration Dashboard.
Enabling the plugin will make your feed accessible via JSONFeed. You can see an example by viewing the davidfindlay.com.au JSONFeed. I’m not aware of any feed readers yet that use this, but you can be sure they’ll come soon. It’s a bit of a chicken and egg problem. I’m always keen on being an early adopter on things like this.