OK, that's pretty effective advertising

This fervent fandom is why Slate and other podcast networks are able to charge such high advertising rates, much higher than what you could typically demand for online display advertising. Because the ads are often read out by the hosts themselves, often in some creative way, listeners don’t feel the urge to skip ahead. “During one of our earliest live shows that had been sponsored by Audible.com, David Plotz was doing the Audible ad in front of the audience,” said Bowers. “He said , ‘Political Gabfest is sponsored by … well you know who it’s sponsored by,’ and the whole audience yelled ‘Audible.com!’ When that happened I was like, OK, that’s pretty effective advertising.
I don't listen to many podcasts, but the ones I do listen to, I can recite all sponsors from memory. Kind of incredible to think that a medium which so closely resembles radio still works in this new era.
