Protip: when working with any API that returns JSON, install the [JSONView Firefox Extension][1].

By default, Firefox wants to *download* the application/json content type. This is not very helpful. JSONView changes the behavior so that you view the JSON in the browser, and additionally get syntax hi-lighting and expand/collapse.

![alt text][2]


  [1]: https://addons.mozilla.org/en-US/firefox/addon/10869/
  [2]: http://dl.dropbox.com/u/58785/StackOverflowJSONView.PNG