10 Foursquare secrets that should not be secret

Foursquare is all the rage these days. In fact, it seems that telling the world where you are is the new black. If you’re less than familiar with this shiny new object, or need to educate some Luddite about it, check out this post from Adam Vincenzini. He’s uncovered 10 cool things you can do with this hot new toy. Among them, “Steer clear of your foursquare ‘enemies.’ There is an app called Avoidr which keeps tabs on your ‘blacklisted’ friends and helps you prevent any unwanted ru…