...in Ruby. For some applications. With Node, I'd have to see a very good argument for why I should give up all of JSON's great features for the vast majority

...in Ruby. For some applications. With Node, I'd have to see a very good argument for why I should give up all of JSON's great features for the vast majority of services. Unless the data itself needs to be binary, I see no reason why I shouldn't use the easy, standard, well-supported, nice-to-work-with JSON.