This thread reminded me of a novel I saw in the grocery store checkout line in the 1990s - it was a computer virus that made the screen show a symbol that led to people who saw it turning to powder or dust (I think the virus was called "Powder") (I'm not thinking of Snowcrash). It was a standard mass-market paperback of the kind perfect for an airplane flight.
If I recall correctly, the cover featured an IBM PC.