Yet another interesting, "only possible in Korea" story. For those who didn't know, Seoul is pretty famous for its healthy (or almost unhealthy?) dose of night life. Recently, a civil organization called Citizen's Movement for No Prostitution published "escort businesses map" of Gangnam Gu, southern part of Seoul.
As expected, the whole Gangnam area is found to be jam-packed with various kinds of nightlife places where people can drink and, if they want, buy sex. Does this spell a business opportunity for nightlife-focused mobile LBS (location-based service)? You figure it out.
