Details of where Apple and Google now stand are still a bit unclear. In the past, using undocumented API’s would violate Apple’s. As of late more app developers are seen using similar techniques. It’s unknown whether Google snuck a fast one by Apple, which some have alluded to, while some believe Apple may have given Google a bit more freedoms here. I’m sure there’s a clause in the agreement which states Apple, regardless of what this agreement states, holds final judgment and authority regarding approval or disapproval of an app. [cnet]