First of all, i'd say designing a _good_ protocol is pretty much the hardest and smartest work to do. Of course everyone can design a protocol to send a messang

First of all, i'd say designing a _good_ protocol is pretty much the hardest and smartest work to do. Of course everyone can design a protocol to send a messange from A to B. But you really think it is something _that_ easy to design a complete protocol for messaging between a wide variety of clients and servers? Take as much as possible usecases and edge cases into account and make it really good? If it would that easy SMTP wouldn't have a big pile of extension RFCs. Everyone can write a website that let's people chat in groups, right? I mean.. really... THAT is easy. ;)