Exclusion-worthy offenses range from having adult or other otherwise banned content anywhere on the site--even if there are no AdSense ads on those pages--as well as having nothing but ads visible above the fold. "Other issues are placements that could confuse the visitor (such as making navigation or directory listings that resemble AdSense ad units)," Slegg says. "And having anything that pops overtop of ad units, such as expanding navigation or slide-in pop-overs/ups."