Long time ago i speculated the ending of auctionads, and yesterday i received an email from them announcing the merge between Auction ads and Shoppingads.
The difference now in shoppingads is that in order to benefit from CPC ads you will need to be select for premium publisher, and even if you are selected you will only get CPC ads from US and CAnada traffic, every other country origin will have CPA ads. If you are a standard publisher then you will have to “make a living” with CPA ads only.
As you can see, shoppingads now separates traffic according to the origin, and now, only US traffic will get CPC ads, and international traffic gets CPA ads.