I programmed a $7 ESP32-S3 board to block all computer's web ads - and it took just minutes ...

(From “Do You Compute: Selling Tech from the Atomic Age to the Y2K Bug” by Ryan Mungia and Steven Heller) “I think it was a big challenge for ad agencies, the people who were making the ads, to ...

Word of mouth. Fix someone's computer, and if they think you did a good job, ask them to refer other business to you. I suppose there's that and handbills... You can find companies that do not spend ...