Other discussion on sageuks:
http://discussions.viki.com/t/korean-historical-dramas-sageuks/1450/29
http://discussions.viki.com/t/korean-historical-dramas-sageuks/1450/41
and check out The Sageuk Channel http://www.viki.com/tv/22648c-the-sageuk-channel
Anyone wanting to watch Kingdom of the Winds might want to watch Jumong first. Unfortunately it isn’t available on Viki.