Traditional display banners in various sizes: 120x600, 160x600, 250x250, 300x250, 336x280, 468x60, 728x90.
Popup/unders are effective rich media formats; once activated another browser window is opened containing the ad.
Ad sizes optimized for mobile screens including smartphones (iPhone, Samsung, etc) and tablets
This format maintains its position in the browser when the visitor scrolls down the page, resulting in a higher CTR.
A vast selection of non standard ads like Upper bars (Notice ads), Sliders, Bottom Ups, etc.