I suspect every marketer has heard this famous line at least once during their careers: “Half the money I spend on advertising is wasted; the trouble is I don’t know which half.” That famous quote is attributed to John Wanamaker, an American merchant and the first retailer to place a half-page newspaper ad, which he did in 1874. (A few years later, he was the first retailer to place a full-page ad!) Mr. Wanamaker lived in […]