being a member of more then one ptc sight

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I am wondering about joining more then one pay to click sight but they say in the TOS that you can can not do the clicks on other sights. I have joined one PTC sight that pays 5 cents a click and another that claims 3 cents a click. If there are any other good ones please feel free to pm me but i am not going to waste my time with sights that pay less then one cent a click or only have a few adds on them.