I still don't understand how people who don't use RSS/Atom get by day to day… during development of software projects I subscribe to tags on GitHub for dependencies that I may need to update, same thing for stuff I package in the Arch User Repos and need to update promptly after a release, for services that I host I subscribe to lots of services blogs and status pages so that I get news of security updates or outages quickly, etc.
Even for non development stuff I can't imagine going to each blog I read individually or just hoping that I see it on a social network; instead they all come to me and I don't have to do any work to read through all the various blogs I like, news sites, etc.