To demonstrate how marketers have adapted to media innovations through the last century and created measurements for them, IfbyPhone created the following infographic about the evolution of the "growth hacker" from the 1920s to today.

"Growth-hacking refers to the use of marketing strategies backed by data to generate growth," says Irv Shapiro of IfbyPhone.

One example of growth-hacking shown in the infographic comes from the 1920s and 1930s. As radio emerged and grew in popularity so did paid radio ads. The first paid ad went on air in August 1922, and Arthur Nielsen, an American market analyst, developed the Nielsen Radio Ratings to analyze the radio market and radio programming.

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Veronica Jarski is the Opinions editor and a senior writer at MarketingProfs. She can be reached at

Twitter: @Veronica_Jarski