XML's quirky namespaces | InfoWorld: "That's good news in the long run. We'll increasingly want to mix and remix XML data, and to do so we'll need to master namespaces. In the short run, though, I expect more of the turbulence we ran into this week when Sam Ruby and Mark Pilgrim, co-developers of the RSS/Atom Feed Validator and contributors to the Atom specification, found problems with Apple's specification of an iTunes namespace, and with Apple's -- and other podcast publishers' -- use of that namespace. These folks should have known better. But they weren't the first to be bitten by the quirkiness of XML namespaces, and they won't be the last."