Jak tworzyć znakomite i dochodowe reklamy zwielokrotniając Twoje zyski?
"In the book, Hopkins outlines an advertising approach based on testing and measuring. In this way losses from unsuccessful ads are kept to a safe level while gains from profitable ads are multiplied. Or, as Hopkins wrote, the advertiser is >>playing on the safe side of a hundred to one shot<<." (Wikipedia)
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