i dunno. i've had reasonably good luck on StackOverflow for android related questions. given Google's sometimes inconsistent/irregular APIs and documentation, and a certain amount of bugginess, Android devs would have a lot harder time without SO.

but, your comment highlights a kind of surprising reality about ad dollars and Google. i mean, StackOverflow captures a significant quantity of ad money from Android related content because, in the early days of Android development, Google itself directed Android developers to StackOverflow.