I thought Shopzilla was PPC?

Recently noticed a drop in my shopzilla earnings while still registering clicks. Eg. the other day 20 clicks for something like $0.15. I emailed them, and the response was something along the lines of you’re sending us poor quality traffic which isn’t converting, which is why you’re not getting much. I thought Shopzilla was PPC? But that doesn’t sound like PPC to me, it’s more like pay per action or something.
I’m also a little confused, as I would have thought that whether or not the traffic converts or not is their issue that they need to address rather than the other way around?

See original post by swollenpickles