Up until some recent events, it was quite hard to get through to Google regarding anything going on in the Android Market, be it stolen apps, copyrighted material, or getting any feedback regarding why your own app was removed. Sure, they still listened to DMCA requests and malware reports, but it seems that complaints by mostly large copyright owners saw any action, while reports by small-time developers getting ignored were getting abundant around the web.
Researchers from Intel, Penn State, and Duke teamed up to study just how secure the apps in the Android market are. Specifically, they wanted to see what private data was collected by apps, and what the apps then did with said data. The results: 15 out of 30 "popular" applications sent geographic data, 7 sent unique hardware information, and a few sent info such as phone number and SIM serial to developers.