Anybody know if there has been any research on where the best location is to open popup windows?. For example, if it opens top right, will there be more clicks then if it opened bottom left?.
My experience (120-150K site visits per day) is that only about 30% of pop-unders created as an onunload in the body tag get created but of those the click-through rate is 3 to 4 times that of a similar ad on a busy web page.