Has anyone joined ptp123.com?

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I just got to know about this site recently, it's a ad network site, where you can place ads in your websites or blogs, and you'll get paid when visitors view your pages. This opportunity seems to be quite good, as the minimum payout is only $2 and it pays when someone visits your pages, not like others, it requires clicking on the ads then only you'll get paid. But one disadvantage is that though everyone can join, it opens for International members, only traffic from certain countries are counted. The site seems to be quite good, but I am not sure if it's a legit site or not, though it states that they have been paying to their members. Has anyone joined this site and got paid by the site? Also, I have put the codes in my blog, I do not see any advertisement showing, but I already got some earnings. Does everyone experience the same, or it's just me?