I prefer JSON over XML for most applications, but one advantage of XML is that its strict structure aides parsers. With XML it's easy to see if you've closed al

I prefer JSON over XML for most applications, but one advantage of XML is that its strict structure aides parsers. With XML it's easy to see if you've closed all of your tags, etc.; it's all about the parser. Conversions between XML and JSON can be a challenge (defining namespaces,etc.). The Google Data API handles this very well. Check out their nice side-by-side example: http://code.google.com/apis/gdata/docs/json.html http://code.google.com/apis/gdata/docs/json.html