XMPP as an extensible protocol (it's even in the name!) relies on XML namespaces to avoid collisions between extensions. Were it to use something like JSON, ext

XMPP as an extensible protocol (it's even in the name!) relies on XML namespaces to avoid collisions between extensions. Were it to use something like JSON, extensions would all have to be aware of each other so that no naming collisions or other awkward behaviour can occur.