Google's Rubin says that such clauses have always been part of the Android license, but people interviewed for this story say that Google has recently tightened

Google's Rubin says that such clauses have always been part of the Android license, but people interviewed for this story say that Google has recently tightened its policies. Facebook, for example, has been working to fashion its own variant of Android for smartphones. Executives at the social network are unhappy that Google gets to review Facebook's tweaks to Android, say two people who weren't comfortable being named talking about the business. Facebook learns what it means to be a sharecropper.