1.original founder of cyworld.com(founded on 1999) which is #1 social network community in the world. 2.founder of saycupid.com which is #1 single community in korea 3.co-founder of kukubox which was #1 social addressbook in the world. 4.founder of storyblender.com which was techcrunch40 finalist in 2007. 5.founder of story2film.com which is for film industry transformer.
