Open Wireless node at ICN + VIEWS!!!
 

Mods: Please move if need be...I don't know where the Airport section is anymore.

At ICN, there is a free (supposed 15 min) access to the Internet using PC in an Internet lounge. Otherwise its prettty much sit down terminals with pay service and there is wireless but it is also pay.

Well on the 4th floor there is an unsecured open wireless network ka*******
Its not the fastest but it works. I am typing on it now.

There is a lounge called Panorama Lounge where you order food and it was some good views of gates 28 etc with planes coming and going. And its pre security. If you don't want to order there are these seats outside where you can sit at.

There's another bank of free internet terminals inside security/immigration upstairs and across from the KE Business Class Lounge near the gates in the low 20s. Unfortunately, no view, because the KE lounge occupies the entire terminal wall facing the ramp. Of course, there are more free terminals inside the lounge for those with access.