[sambeau]

I like it, but it's too late.

It could also do with a datetime datatype, the one thing (apart from comments) that I constantly feel the need for in JSON.

[Someone]

I think json would be better off if it supported IEEE floats, too. Sometimes, you really have to serialize a NaN or infinity.

[zzo38computer]

I think that DER (which is a binary format, although there are ways to make it from text formats) is better, which does have NaN and infinity and other stuff.