Personalized ad playlist for podcasts?

Podcast platform Acast is partnering with a company called A Million Ads to deliver to each individual podcast listener advertising based on that listener’s profile—kind of like Pandora, but with ads instead of songs. Editor’s $0.02: While podcasting is a more controlled end-to-end experience, I have a feeling that eventually somebody will figure out a way of delivering personalized ads to radio listeners, at least when they are listening online.