Simplicity may be the single most important usability guideline. The less stuff you show users, the less they'll have to scan and comprehend, and the better the odds that they'll pick the correct option at any given stage. Duplicating features adds significant overhead to both the scanning process and the comprehension process. [Tomalak's Realm]

Radio is all about publishing. The root of that word is "public." By design, Radio makes it easy to make things public. On the other hand, Groove wants to keep everything private. The connection between the two products should reflect their nature. Publishing should be an overt act in Groove, somthing you do deliberately. "I want to publish this," says the Groove user. He must have permission to do that, whatever that means in GrooveLand. John Burkhardt, who works at Groove, says "This is something that freaked me out too." [Scripting News]