As a recent foursquare addict member, I’ve been questioned by several friends and colleagues each time I pull out my phone to “check-in” when we arrive at a new location. It would seem that, even though foursquare is adding close to 100,000 members each week with over 1.7 million users, many people still don’t know about it.

foursquare is simply a location-based social network used on your cell phone. Similar to competitors like Brightkite, Loopt, Gowalla, and Google Latitude, it lets you update your friends on your whereabouts in the hope that they’ll be in and around the same area and can meet up. And who doesn’t love meeting up with friends? You also earn points and unlock badges for discovering new places, doing new things and meeting new people. While the points and badges don’t seem to mean much, each check-in gets you closer to being the mayor of a particular venue – and having check-ins and mayor status is actually worthwhile. Read more