I made and paid order at Gmarket on 26 Sep 2012, but it cancelled my order without my apply on 4 Oct 2012!
Gmarket said that there has been some problem like the illegal usage of credit card during these days. Some people steal the other's credit card and use it. They do this to prevent those kind of problem. This is jsut for providing safer transaction for both of them. not only for them but me.