These photos were taken about a month ago (they slipped my mind) near exit 12 of Jonggak Station, and they reveal that Pagoda seems to have a pretty clear ideas about its target audience.
The first ad, for 'one to one English conversation, direct English,' seems to have women in mind, and I can't help but think of it as an illustration for this article:
The attraction there is clearly for women to get close to, to have one on one communication with, and to have almost direct contact with the male foreign teacher. The program aimed at men, on the other hand, takes a slightly different approach:
The idea is to take the intensive program and, moving beyond healthy competition, to be better than the (male) native speaker, to beat him, to be stronger than him.
All in all, they're a rather succinct summary of popular attitudes towards foreign (native-speaking) teachers.