David Shen was employee #17 at Yahoo, where he eventually had a hand in, not only the birth of advertising as the primary business model for the web but, eventually, the development of digital ads into their more modern, interactive form. As you'll hear, David recounts the early days of Yahoo, surviving the dotcom bust and taking advertising beyond the simple banner ad.
And he recounts all of this in his recently published new book: Takeover! The Inside Story of the Yahoo! Ad Revolution