what is PTC?

Malaysia
October 31, 2012 12:31am CST
when reading the post from mylotters, i had found this word PTC around and it is relate to money earning so i wound like to ask mylotter what is PTC! maybe a lot people know this already but as a new comer here and new comer to internet earning, this word is a new word to me so i hope anyone can tell me what is this and share with me some relates to this PTC.
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