For decades, marketers of personal care products at the prestige and mass levels have had to deal with inept retailers who did little to promote excitement in their stores. Meanwhile in the grocery aisle, household goods companies faced ever-rising slotting fees for their products. But now marketers of household cleaners, cosmetics and shampoos are fighting back…online. According to the Financial Times, companies such as Procter & Gamble and Kimberly-Clark are increasing their intern...