You want to stay away from these Chinese recruiters who constantly disguise their identity - see the number of email addresses/identities they use when recruiting on ESL sites:

arx237sd@hotmail.com
changzhouschool@yahoo.com
china@newedu.net
dkjfd_dfj@163.net
dongbeiesl@yahoo.com
ehr@maileng.com
englishteacherschina@hotmail.com
englishteachersdirect@hotmail.com
esljiangsu@sina.com
esljobposition@yahoo.com.au
eslrecruiterchina@teacher.com
eslrecruiterchina@yahoo.com
fao2008@126.com
faohangzhou@126.com
faojiangsu@126.com
hualiedu@yahoo.com
jiangsuesl@yahoo.com
jiangsuesl@yahoo.com.cn
jiangsuschool@yahoo.com.cn
jtt6x5nd@hotmail.com
jingyizhang2000@yahoo.com
Judyminliu2004@yahoo.com
julangaoruha@126.com
Juliazhu099@hotmail.com
Juliazyzy1000@yahoo.com
mandifruli@yahoo.com
mandifurli@yahoo.com
netlzhang@sohu.com
netlzhang@msn.com
nicetianjin05@yahoo.com.cn
nicenanjing@yahoo.com.cn
ningbofine@yahoo.com.cn
qingdaomeet@yahoo.com.cn
sallywan23@hotmail.com
sandyliangzh@sohu.com
vincentzhang@asianamericancoal.com
wanping10000@yahoo.com
y2005166@yahoo.com.cn
yuengchen_cn@126.com
yuengchen12_cn@126.com
yuengchen07_cn@126.com

Their web sites: http://newedu.net and http://www.pieg.org

More info on Huali Education on the Black List of ESL Recruiters at http://www.bearcanada.com/esl/bl01.html

If you have additional info on these "recruiters" please help other teachers by posting it on ESL message boards.