Don't use the geolocation apps like Foursquare every where you go. Don't use it, particularly, when you are visiting locations for business purposes, and if you are involved in late-night parties. Your boss may think that you were late to office because of last night's party.
I hate those who keep checking in. They tell you about there status like i am in potty doing potty done potty. WTF koi mazak hai kya