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Interesting, i have never seen a browser ad in my life... is that in US or something?

Just searched real quick on YouTube. It wasn't only in the US. https://www.youtube.com/watch?v=ak8UKuQvM98

Netherlands too, and I saw Google ads in Germany as well but not sure for which product.

There were Google Chrome ads in Germany, e.g. here: https://www.flickr.com/photos/tinto/5336283196/