I was reading a thread at WebmasterWorld named Received email from Yahoo!: Y!Q Challenge, which started off reading; "YPN is finally here. Well it is Y!Q and it is in Beta but I'm excited!"
As the thread went on, it seems like there is great confusion about this product.
(2) This product, Y!Q, is not YPN (Yahoo Publishers Network). I made sure to clarify this with Yahoo! and they told me that Y!Q is one of their publisher offerings but at the same time Yahoo is working on other publisher products as well, something like an AdSense competitor.