Originally Posted by janhall_us
I've started moving all the apps I've collected as apks to the Amazon version instead to have as much as possible in one place for ease in keeping up with the updates. I just found out last night, if you aren't signed in to Amazon or don't have the Amazon Appstore installed on your eDGe, none of the apps you got from Amazon will run!!!
Many paid apps from Google Market now "phone home" for a license check as well. Many other sources, like App Center, also need to be installed for licensed versions to run. Developers deserve to get paid for their work if they have chosen to sell their app; many of the apk's that are found by a Google search are paid apps that are pirated. Recently an app developer posted a fake download http://downloadsquad.switched.com/20...pirates-and-s/
to teach a lesson. Besides, if you want updates, you will need the Amazon app anyway.