I don't have any popups / popunders on my paysites because a while back there was soooooo much whinging from affiliates that they were bad, even though they were getting 100% credit for these popups. Maybe its time to re-evaluate this strategy???

What do you guys think of pop ups / pop unders?

Oh, my personal preference is a pop up on exit, so as to only annoy surfers that are on their way out of there anyway.

cheers,
Luke