> everyone who does "messaging" agreeing to let messages from any service go to any other service.
But this never existed, nor is the author claiming that. AIM, ICQ, etc required you to create an account on their own service. XMPP might be used, but I don't think any major service besides Google Talk supported federation. What the author had was a single client that happened to connect to multiple services, but you can do the same nowadays (e.g. using Pidgin and its plugins).
But this never existed, nor is the author claiming that. AIM, ICQ, etc required you to create an account on their own service. XMPP might be used, but I don't think any major service besides Google Talk supported federation. What the author had was a single client that happened to connect to multiple services, but you can do the same nowadays (e.g. using Pidgin and its plugins).
(As an aside, it's refreshing to see how BS-free the announcement that GTalk supported federation was: http://googletalk.blogspot.com/2006/01/xmpp-federation.html)