Atom is better than RSS, in ways that matter

Atom feed format is technically superior to RSS in several important ways that go beyond ideological preference. While many practical differences between the formats don't significantly affect users, Atom handles specific cases—such as reliably encoding special characters and markup in titles—in ways that RSS cannot, making certain content impossible to express reliably in RSS but unambiguous in Atom. The author argues that people should switch to Atom for these functional reasons rather than merely technical purity.