I've been running my own XMPP server for years, with federation enabled. A few years ago, it seemed like the logical successor to AIM and MSN and all those other walled garden IM systems. And how easy! My XMPP "name" was the same as my email address. One less thing to put on my business card.<p>But since then, I have realised a big problem with it - no-one uses it! Today I communicate with the world by iMessage, SMS, Twitter, and email. "Instant messaging" just seems to have died as a concept entirely, replaced by yet more walled gardens like Snapchat.<p>My XMPP server is being turned off for good, next week.