AdRotate allows you to place advertising banners pretty much anywhere on your site.
https://wordpress.org/plugins/adrotate/
Widgets · WordPress Plugins
Get access to data on 137,212 websites that are AdRotate for WordPress Customers. We know of 42,351 live websites using AdRotate for WordPress and an additional 94,861 sites that used AdRotate for WordPress historically and 22,257 websites in the United States.
Get a list of 137,212 websites using AdRotate for WordPress which includes location information, hosting data, contact details, 42,351 currently live websites and an additional 43,770 domains that redirect to sites in this list. 94,861 sites that used this technology previously and 22,257 websites in the United States currently using AdRotate for WordPress.