[Cpoll]

I don't buy it, what's stopping people from putting pragmas in key:value pairs? There's a chance of collision, but you're already deciding to sacrifice interoperability, so just accept that the myJson spec says '___declare___' is a reserved key.

[jakeogh]

If I parse json, I dont want to lose data. Having the parser read the comments (however they are, as long as they are in spec and therefore read by the parser) is a good thing. Having to parse the file again, with a fuzzy out-of-spec system (looking for comments) is clearly worse. The whole point of json is to serialize stuff, breaking that to insert non-machine readable comments makes the spec less reliable.