How often do you find yourself on some website, innocently trying to read an article, when you notice that the site’s designers and programmers seem to be trying as hard as they can to get rid of you?
They cover the article with an invitation to subscribe to something, and make it hard to see how to close the intrusion (this is called a “door slam”). They mess up your scroll, so your browser doesn’t work properly. They stick an irrelevant video player over part of the text. With the sound on. They cover half of the content with giant headers and footers that stick in place, leaving two lines for thing you’re trying to read. They disable the contextual menu, or selecting, or copying, so that if you do manage to read the thing, it’s hard to share or quote it, or make notes.