http://www.wingbus.com/

http://r.wingbus.com/seoul/samcheongdong/yeon_schd/map/?splayer=N

If you are looking for great online maps of neighborhoods in Seoul, then I recommend you check out Wingbus. Here is a map of Samcheongdong with a listing of cafes and restaurants.

It's all in Korean, but I think you can figure it out.

Dan