Imagine a not-so-distant world, where advertisers no longer need to spam you with ads. They simply inject you with a drug that induces an irresistible craving for their product. This is the topic of a recent podcast that I listened to on the Escape Pod.
If you are into Science Fiction, then I'd suggest you check out the site. Steve, the editor picks out some great stories which he pays for using listener donations, so it stays free to the listeners. The 100th episode was especially nice in that it included a wonderful story by Isaac Asimov, Nightfall.
Take a look, and enjoy!