Conversion Attribution and the John Wanamaker Problem > Latitude Blog - Digital Marketi... - 0 views
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David McCart on 28 Jul 09"Half of the money I spend on advertising is wasted; the trouble is I don't know which half" - John Wanamaker It's amazing to think of the changes the world of marketing since these words were uttered OVER A HUNDRED YEARS AGO and still it is a problem for the majority of digital marketers
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