Sci fi authors have, for decades now, envisioned a future with ubiquitous, pervasive advertising. That doesn't mean we shouldn't fight it, but we shouldn't really be surprised....
"Transmitting" advertisement/commercials into our dream ala Futurama cannot be far off (I hope I'm wrong). Perhaps this would be something a hotel could offer to reduce the cost of the room? Trying to think of a positive application of this idea.