Popunder ads are cheaper compared to the other methods of increasing traffic. Options such as frequency capping, keyword targeting are used in the designing of this type of advertising. Capping technique, traffic day parting, State and city targeting, Geo targeting, URL targeting and re-targeting are other options in that one can use for an effective popunder design. JPEG, SWF, GIF formats are mostly used in this form of advertising. Attractive and targeting customers from a unique geographical area are also possible when considering a company for designing of popunders. USWebTraffic.com provides cheap and reliable means of getting quality traffic to the website through popunders. Popunder advertising windows appear onscreen when the user closes the current window. The website USWebTraffic provides popunder advertising starting at $3 providing the customers with a variety of options on size of the popunder and targeting options. The adunits can include a full page of advertising and can also show other custom sizes to attract more customers in terms of traffic to their site. The user can choose from have a full screen popunder window to a shorter window. The custom sizes include 800 X 300, 160 X 600 and 300 X 250. All information is available on the site.