There are much worse things that a website can do to your computer. Website can run Javascript, which drains your CPU (drains your battery), it can use your har

There are much worse things that a website can do to your computer. Website can run Javascript, which drains your CPU (drains your battery), it can use your hardware e.g. to mine bitcoins while you are reading an article. At the end of the day, I think it is not that easy to say, what is a "bad behavior". Somebody can consider showing advertisment as a bad behavior. In many cases you can communicate with authors of a website and tell them your opinions, or stop wisiting that website (which is also a form of communication, authors will know that something is wrong when they lose visitors).