Watching TV, ads ran every 15 minutes and lasted 3 minutes when I was a kid but then jumped up to 4-5 minutes. So, 4 minutes of ads and 11 minutes of show, then another 4 minutes of ads. Unskippable, awful ads for deodorant and slap chop

Oh discussion is only about computers. I remember the first popup ads and pop under ads and they put a fake x so when you click it instead of closing it takes you to install malware