I humbly disagree. The reason i'm using JSON is for the fact that's it's fast to parse, compact, and lightweight, compared to XML. Now the reason for needing t

I humbly disagree. The reason i'm using JSON is for the fact that's it's fast to parse, compact, and lightweight, compared to XML. Now the reason for needing the xpath/xslt/xsd version of json is not principaly because it's a serialization format, but because it's a serialization format used in almost any modern web API. Experience shows that using JSON for web APIs is a good choice. Saying "you should've used XML" may have been relevant 5 years ago, but i think it's time to assume the fact that JSON is now so much used, that it needs the same kind of tools that xml has had almost from the start.