[abalone]

> They don't need you to "check-in" when they are grabbing your location every 15 minutes in the background.

If they are tracking users who are not actively using the app then that is just plain creepy and wrong. Are you saying Foursquare tracks background location to thus day for users who installed it and tried it out once a few years ago? That would explain the database value but it's Creep City.

Operating systems should expire those background privileges for apps that fall into disuse (or do they already?)

[tim333]

On the iPhone you can go to "location services" and see a list of who's tracking you. I just did and there are 8 that say "always". You can turn it on and off but few people including myself bother much.