Oddbean new post about login | logout You should read Final Crisis by Grant Morrison. It's about a memetic virus, the Anti Life equation, spreading through information channels such as the Internet, radio, tv, ect.
I was just going to raise this idea, but I hadn't heard of that book. Realizing that it doesn't even have to be a physical organism makes this so much scarier. A parasitic idea can zombify its hosts, which arguably we see all around us.