Is anyone else reminded of this passage from the prolog to Neal Stephenson's Diamond Age?
> You could get a phantoscopic system planted directly on your retinas...You could even get telaesthetics patched into your spinal column at key vertebrae. But this was said to have its drawbacks ... it was rumored that hackers for big media companies had figured out a way to get through the defenses that were built into such systems, and run junk advertisements in your peripheral vision (or even spang in the ... middle all the time - even when your eyes were closed. Bud knew a guy like that who's somehow gotten infected with a meme that ran advertisements for roach motels, in Hindi, superimposed on the bottom right-hand corner of his visual field, twenty-four hours a day, until the guy whacked himself.
> You could get a phantoscopic system planted directly on your retinas...You could even get telaesthetics patched into your spinal column at key vertebrae. But this was said to have its drawbacks ... it was rumored that hackers for big media companies had figured out a way to get through the defenses that were built into such systems, and run junk advertisements in your peripheral vision (or even spang in the ... middle all the time - even when your eyes were closed. Bud knew a guy like that who's somehow gotten infected with a meme that ran advertisements for roach motels, in Hindi, superimposed on the bottom right-hand corner of his visual field, twenty-four hours a day, until the guy whacked himself.