We'll create fresh WordPress site with Feed JSON installed. You have 20 minutes to test the plugin after that site we'll be deleted.
Adds a new type of feed you can subscribe to.
http://example.com/feed/json or http://example.com/?feed=json
to anywhere you get a JSON form.
http://example.com/feed/json?callback=callback or http://example.com/?feed=json&callback=callback
to anywhere you get a JSONP.