Do they design these things with 4 yr olds in mind?

Yesterday, I was browsing the Internet on a laptop with S standing right by me. Things were quiet and uneventful until a pop up window came up. Like a well-honed reflex, I automatically closed it. S started whining. "What was that? I want that!". I think the window might've had flashing gumballs, but I didn't look at it long enough to process anything about the nuisance window.
"S, it was junk mail." I told her. But this didn't placate her.
"I want junk mail!" she declared boisterously. "Give me junk mail!!!!"