Is ptr-enterprise.com another scam?

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I did't remember when and where i had registered this site, and i have been receiving it's ads for several days.It says that i can earn at least $200 by a click or read a mail. I don't believe there is such a good thing like this. The fact is that when something is too good it maybe not ture.Their URLs always to some sites which need to pay.I had done some research by google, but i can't find the actute information.Is anybody here know this site? Is it anoher scam? Shoud us inform everybody to watch it?