What you say is absolutely true Polaris. People need to know everything about their teaching gigs before they buy a plane ticket and come here to China. The links you gave would have prevented me from coming to China had I seen them a few months ago. Also here are some good tips for teachers exploring the China option. Be sure to read this before you sign any contracts and before you leave your homeland:
http://www.englishpost.com/forum.php?mo ... ad&tid=254
One thing for sure, China is a fun adventure but don't expect to earn a lot of money here.