Apparently the FCC under the leadership of Julius Genachowski is investigating the blocking of Google Voice from the Apple App Store. Moreover the FCC would like to know the role AT&T played in this decision. Can we trust Apple to give an honest answer? 

Time will tell but I for one expect them to ask the FCC what the definition of the word is is. 

This places Apple in an interesting spot as it really puts a focus on how they decide what applications are denied due to the vague duplicate functionality argument. It may soon turn out that this term means your app is playing in a space they don’t want to cede and neither does AT&T.