Hey, I found that site too a while back. I'm glad someone here has taken notice of it. There is a site written by a Jewish person that explains their views on Satan too. (i.e. an agent of God despatched out to test his followers). It uses a good comparison with Willy Wonka and the chocolate factory
http://www.beingjewish.com/basics/satan.html
http://www.beingjewish.com/basics/satan.html