Gone2Korea review

I used Gone2Korea as a recruiter to move to Seoul, South Korea. They were incredibly helpful (replying to emails quickly, answering all my questions).
Ensure you do your own research into the schools you are offered too. It does feel a bit like a leap into the dark because you won't see the school before you go, so make sure you ask specific questions in your interview & to the foreign teacher they put you in touch with.

Also note that it will be hard work! Some classes are a challenge behaviour-wise so the job won't always be smooth sailing!