Two pages to say that you should be able to select a sub-set of circles that will feed your stream, that user search only show users in results and that sparks

Two pages to say that you should be able to select a sub-set of circles that will feed your stream, that user search only show users in results and that sparks is isolated in its subview and does not user content content for suggestions. All those things makes sense. It might refined, but you can't say they really are design errors.