Man, remember the late 90s and early 2000s, when the IM scene was a mess of incompatible networks like ICQ and AIM and MSN Messenger, and people were like "fuck this" and came up with this protocol that was interoperable with all the others through gateways and also it was extendable, and we could all be happy together?... /grump The worst part is that WhatsApp is actually based on Jabber >:(
IRC is still alive, at least.