Text Ads are quite simple. If somebody purchases an ad space, they will be able to specify a short, catchy message, which will then be displayed on the chosen medium.
Text Ad can be an effective way to seamlessly integrate an ad space in Blogs, Newsletters, and other text-heavy mediums.
Image Ads are the traditional way of serving banner ads, just like you’d get them from Google AdSense.
Advertisers are meant to submit an eye-catching (but not intrusive) banner image, which will then get displayed on your site.
In the review step, make sure that the image will fit into your site!
This type of ad is the most successful one, with an image but also a a personal text delivered. This creates a visually pleasing but highly eye-catching ad.