The real question is why any of these people signed up for Foursquare in the first place. Foursquare is great for people who want to share their location, not s

The real question is why any of these people signed up for Foursquare in the first place. Foursquare is great for people who want to share their location, not so great (surprise!) for people who don't. If you don't want the risks and benefits together, don't sign up.