One thing that could stop android's growth dead in its tracks is people starting to think that Google is spying on them *without telling them*. I expect this issue to become a significant one as more people discover what their smartphones are broadcasting to the cloud. "After developing and using TaintDroid, several universities found that of 30 popular free Android apps, half were sharing GPS data and phone numbers with advertisers and remote servers. A few months ago, one app was sending phone numbers to a remote server in China but today the situation looks a lot more pervasive. In their paper, the researchers blasted Google saying 'Android's coarse grained access control provides insufficient protection against third-party applications seeking to collect sensitive data.'