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Your TV set has become a digital billboard. And it’s only getting worse.
(arstechnica.com)
This is a most excellent place for technology news and articles.
As opposed to the old days when it was an analog billboard
There were no ads in the UI of the TV though.
The only thing close to a UI was TV Guide, which most certainly had ads.
(I kid, but only a little.)
Was this something called ceefax or teletext? I vaguely remember hearing of someone using it to book a holiday when I was growing up