Niche interest and a reason to socially interact with strangers. It gets creepy when my wife checks into Foursquare and sees that the 'Mayor' and 8 other people

Niche interest and a reason to socially interact with strangers. It gets creepy when my wife checks into Foursquare and sees that the 'Mayor' and 8 other people are there, too. Who cares? She certainly doesn't. She just wants points or some deal or something.