Using display ads for promoting your online business can turn out to be very profitable. But investing in the right kind of display ad is also very important. So if you want to get good quality traffic at your site then you can invest in popunder advertising which is considered to be the core of display ads. The popunder ads are considered to be eye catchy and more appealing as compared to the other kind of advertisement. You can choose to invest in contextual popunder ads that enjoy a better click through rate and can turn out to be a good investment.