POB features ads in sizes and styles ranging from tiny text boxes with hot links to banners designed to fit into traditional and non-traditional spaces. Depending on the site's serving capability, DNA can also provide a version that serves rich-media banners. The company serves and controls Network ads from its own servers, making it less likely that they will be pre-empted by publishers, a problem plaguing traditional CPA-based ads that compete for space with more profitable cost-per-impression (CPM) based ads.