Meet Stalqer -- a curiously named location-based social network that TechCrunch describes as "Foursquare on steroids." Similar to Foursquare, the free iPhone app tracks you and your friends' locations and broadcasts this data via the application, and through push notifications. A key differentiator, however, is that Stalqer updates the location in the "background."
In other words, Stalqer has found a way to record your location without you having to actually open up the application. The service also lets you import your Facebook friends, via Facebook Connect, to the app, which will potentially allow you to track their every move whether they've joined Stalqer or not. It's expected to hit the app store on Wednesday, ushering in a whole new era of privacy invasion.