Originally Posted by AdultKing

You're free to use Firefox or Safari, however come February Safari will follow the better ads standards. Not sure what Firefox will do.

You're also free to use Bing, oh wait, they're going to be doing it too.

I don't get why this is such an issue for people. Surfers hate popunders, they hate popups and clicking on things that don't behave as expected. Provide a surfer friendly experience, provide value to your website visitors and you'll come out ahead anyway.