AppBrain "knows" what other apps are installed on phones that use AppBrain, and what sort of phone and O/S it is. The AppBrain client harvests this info and stores it in a central DB.
They also know the age, sex and country of use of every phone that uses Appbrain, because when you (as a user) sign up for Appbrain you provide this information. The market data comes from the Market. The program "mashes" these three datasets together. -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
