I've been wondering this lately. I am upgrading from my 15 y/o 1080P 60hz monitor to a 1440P 144hz monitor as soon as the brown truck arrives this afternoon. When I post pictures, I usually crop the unimportant stuff off and resize them to under 1080P and 250KB for easy loading/viewing. It occurred to me that those that have higher resolution monitors might see a much smaller picture than I do. I expect I am going to scale my desktop up so that my icons are the normal size, and the pictures on my screen will appear to be the same size as they used to be on the lower resolution monitor.