Story 1: 2 strangers meet in a bar, exchange phone numbers. They go home (or pull out their iPhone on the spot) and look up that phone number on loserfinder.com to see if anyone has posted anything bad about the person they just met before engaging in something more serious.
Story 2: someone finds out their boy/girlfriend is a cheater. They go on loserfinder.com and anonymously let the world know about it. By doing so, they earn points allowing them to have some control over their own profile.