Well, I can see we send out more signups a day than you recieve, and most of them come from the same site. Site is divided into niches for maximum filtering.
The site has a custom build script that auto-ranks sponsors based on value per click sent out (for each niche). So, if a pps sponsors shaves they automatically move down the list and get less traffic. Doesn't matter if they pay out $5 per signup or $5000 per signup, it's based on value per click sent out. End result? Best paysites (for us) are listed on top.
Ask me how many partnership programs are #1 in any niche where both % and pps sponsors are present?
I actually don't know... but I can take a look
My bet is on zero.
And we have the volume in most niches to make it statistically correct.