Yes there is a great blacklist of both the dishonest, unlicensed, or unethical schools, as well as the fake/scam agents an recruiters with their photos at: http://www.chinaforeignteachersunion.org/2012/12/china-foreign-teachers-union-posts-esl.html This list appears to be updated monthly and has links to the actual complaints so you know why they are being trashed. I have not seen a better list anywhere for China. They even have the photos with the crooked recruiters posted.