If you've perused the Internet in the last little while, you're probably aware of the rumors of Apple's "iRadio" service - a streaming music service that would (if it became real) provide Pandora-like functionality to computers via iTunes, as well as to iOS devices. Such rumors naturally provoke questions: If such a thing existed, how would it differ from Pandora and other streaming services? And given that Pandora and its ilk do exist, what can Apple bring to the party that isn't already there? Let the conjecture begin.Related StoriesApple decorates WWDC 2013 venue with "Where a whole new world is developing" banner