For each theme, advertisers should provide ad images in as many sizes as possible to have the maximum possible exposure for their ads. To aid Aaddzz in targeting, the images for the various sizes should contain substantially similar images and wording. File Format Ads can be in either GIF or JPEG format. In general, GIF images are better for ads containing text and JPEG images are better for pictures. The larger the file size of an ad, the longer it takes to display the ad.
Slower ads have lower click-thru rates.
To estimate the download time for ad, consider that a 28.8Kbps modem can transfer about 3K bytes per second. Restrictions Publishers can restrict the ads shown on their page by the file size of an ad, the quality of the ad's presentation, and how benign the content of the ad is. Use of the rating systems is voluntary. Publishers can also restrict ads by domain name. This allows publishers to immediately ban any ads that are inappropriate for display on their site.