tl;dr: Facebook ad's can have different display-URLs and target-URLs, even the domain can be different, e.g. ad shows cnn.com but leads to myshadysite.com + s

tl;dr: Facebook ad's can have different display-URLs and target-URLs, even the domain can be different, e.g. ad shows cnn.com but leads to myshadysite.com + some subtle promotion for Hunchly (full-text search for your browser history)