Has anyone tried PTC programs?

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I have tried a few of those PTC programs and i lost my hope in gaining money as all the money and time that i spent was wasted by those spam PTC's.Now i am comfortable even though i earn only little but i am contended.I feel genuine PTC's are less in number.I also want to know about some genuine PTC sites.Please do not tell some spam sites.I am already dejected and do not add to my worry.