Those who can’t, preach
Who is it that leaves comments on Ads of the World? I’m not saying that every ad on the site is brilliant but I’m pretty clear that most of the advertisers are more capable of understanding their craft than those who pass judgement from the sidelines.
You’ve just got to hope that most of them are not actually working in advertising agencies. Most of the commentators seem utterly incapable of distinguishing between themselves and the target and even more vague on what strategic role a campaign might be playing for the brand. It is plain scary.