I’m studying Mandarin through a site called Livemocha.com, and after helping me with an exercise (which I wrote in pinyin), a native speaker of Mandarin responded to my thank-you ("duo xie") with "jiayou xuexi zhongwen yao duo ji yi dian."
I was able to pick parts of it out myself and through Google, but I was unable to translate it in full on my own.
Xie xie, Sammie!