JThaddeus writes "Slashdot's own (or former) CmdrTaco has a posting on the Washington Post's website where he discusses how chat apps have overtaken SMS. Yeah, they are cheap. There's no telecom fee per message or for some number of messages per month. However 'The problem of course is that these systems are annoyingly incompatible with each other. My phone can buzz with chat notifications from 3 different apps at any moment. My desktop has even more scattered across browser tabs and standalone apps.' Ditto, nor do I want to hassle learning some app or trying to understand its who's-listening settings. I'll stick to email and to occasional SMS."