I'd advise you to try our AppBrain Ad Detector also mentioned in one of my other comments on this post. It shows you for all apps which common libraries are inc

I'd advise you to try our AppBrain Ad Detector also mentioned in one of my other comments on this post. It shows you for all apps which common libraries are included in them. And as a bonus for developers we aggregate the stats anonymously such that you can see which libraries are legitimate and not on the "android library statistics" page on AppBrain.