Commercials are nothing new. We all grew up with them and can probably sing a dozen or more jingles. What is new is how advertisers have adapted to digital media – especially apps, websites, and social media. Many of today's ads – from product placements in movies and on TV to online contests, viral videos, and "chatbots" (robots that send instant messages) – don't look like ads. And that's by design. Adapting to ever more jaded and fickle viewers, marketers have developed ways to integrate ads into entertainment, so it's hard to tell where the "real" content ends and the ads begin. These techniques also encourage us to interact (click, swipe, play, chat), which gives marketers data about our habits, likes, and preferences.