Come on. You don't seriously believe those numbers do you? They're from crazyland. Also there are so many types of advertising... Banner advertising is but one

Come on. You don't seriously believe those numbers do you? They're from crazyland. Also there are so many types of advertising... Banner advertising is but one. Things go out of fashion, other types of advertising become popular, etc I monitor my ad revenue and ROI very closely, and have done over the last 10 years. Slightly more than some random unscientific 'study' ;)