Yahoo said they'd be reversing out of the South Korean market by the end of this year, and they've now completed this move. Yahoo have posted on their site with detailed instructions to users on when exactly all of their services will stop, with most of them stopping today - December 31.
The company revealed the plans to pull out of the South Korean market back in October, as part of their plan of "reinventing" themselves with Marissa Mayer now in control. The move is said to cost Yahoo as much as $94 million and the loss of 200 jobs. The company said in October:
This decision is part of our efforts to streamline operations and focus our resources on building a stronger global business that's set up for long-term growth and success.