This is similar to what Google offers with Latitude and Apple’s newest iOS 5 feature called Find My Friends – both are location-based apps that helps users locate people they know nearby.
Radar is a great reason to get your business or venue featured on a Foursquare List. Consumers have smartphones with them at all times. Telling a user that he or she is close to a location is great, but it’s also beneficial for merchants to gain more exposure about your specials or deals.
[Image credit: Tamas]