“Half my advertising spend is wasted; the trouble is, I don’t know which half.” This quote is regularly attributed to either U.S. retail magnate John Wanamaker or to UK industrialist Lord Leverhulme, depending on which side of the Atlantic you were trained. The quote has become a cliché for the uncertainty about the effectiveness (or ineffectiveness) of advertising.
Which Half of my Advertising is Wasted — and It Is Only Half?
