I do not think that I have ever seen on the Internet a helpful ad. When I want to buy something, I search what I want or I go directly to online shops that I have used before or to price comparison sites.

Nonetheless, mostly before the appearance of the Internet, when I was reading various technical journals, especially during the seventies and the eighties of the past century, e.g. magazines or journals of electronics or of computers, I was considering most ads as helpful, as they were making me aware of various things that I might have wanted to buy.

Unlike the ads that bother me today, those ads in magazines or journals intended for more competent buyers contained enough technical details and prices to make possible comparisons between products, and they were also easy to skip when not interested, instead of covering important content on a Web page and making efforts to provide a visual distraction that makes difficult to focus on the useful content of that Web page.

The Internet ads are completely unhelpful because they are never about something that I intend to buy in the near future. The most stupid thing is the fact that after I have searched for something to buy, I am bombarded for a long time with related ads, but that is exactly when with certainty I am no longer interested in that kind of ads, because I have already bought whatever I had been searching for.

If you're researching which fridge to buy on Gemini, then an ad might be helpful. So long as they've got the data to answer your questions such as how wide it is.