The Most Controversial Marketing Techniques of All Time

4. 30-Minute Long Promotional Videos

The idea of long video messages (meant to sell a given product) came about because some niches became less responsive to common long-form sales letters. So, smart marketers started to test video sales letters.
As it turns out, video is a lot easier to digest and people are more likely to watch even a long 30 or 50-minute video rather than spend the same amount of time reading a webpage.