Thanks for those links... I should have guessed that people may have asked that before. To answer your question on why I want to know, basically to research wha

Thanks for those links... I should have guessed that people may have asked that before. To answer your question on why I want to know, basically to research what is the best way for people to check-in at a place (kinda like foursquare) using their smart phones, supported by app or browser.