Warning! Someone know Wingoads?? They have a very strange program

wingoads sell traffic in CPM for the advertisers and pay publishers in eCPM (so they pay a revenue share)
My question is: Because there is no way to know for wingoads if some traffic is converting for an advertiser, how they can say that traffic brought from an advertiser is the same sent by a publisher?
There are no info on the net about them. There are no real info about their address... they use a free ssl certificate.... so stay warning!!!