Although Google presently holds 83% of the global search market, there are countries that have been consistently slipping out of its grip. One such country is Korea, South Korea to be exact. Ask any Korean what search engine they use, and, most likely, the answer will be... Naver.
[edited by: engine at 8:32 am (utc) on May 23, 2012] [edit reason] fixed formating [/edit]
I haven't looked at Korea search much recently, but they were always so full of bells and whistles related to their online communities that pure search didn't seem to be as important. Perhaps they can tough it out a bit longer on the old Overture technology?