That's certainly true, but at some level you have to trust us right? Consider that the whole basis of foursquare is that you're telling us where you're going o

That's certainly true, but at some level you have to trust us right? Consider that the whole basis of foursquare is that you're telling us where you're going or using us to figure out where to go next. That information is probably a lot more sensitive than your address book. I think we've earned that trust over the past 3 years, and will continue to earn it over and over again into the future by sticking to our word and being transparent about what happens to your data when you send it to us. I'm not sure how else it could work?