For all that Facebook does to help you organize your online relationships, it doesn’t do much to help you interact with folks in the physical world. Every time you enter a restaurant, conference, or hotel lobby, you’re surrounded by strangers who you might be linked to through mutual friends or shared interests. But it’s hard to know who’s who–and if people you know do happen to be nearby, you might or might not stumble across them.
Enter Highlight, a new iPhone app that aims to tell you about the people in your immediate vicinity. Install it on your phone and connect it to your Facebook account, and it’ll begin alerting you to other Highlight users who are within approximately a block and a half of you. You can pull up profiles with information on them from Facebook and send them text messages (such as “where are you, exactly?”). Founder Paul Davison told me that the app is designed to help you meet new people, refresh your memory about people you’ve met before, and alert you to friends who could be lurking right around the corner.