Your argument holds for mailboxes because it is not a common use case of mailboxes that their owners want complete strangers to check as often as possible becau

Your argument holds for mailboxes because it is not a common use case of mailboxes that their owners want complete strangers to check as often as possible because they've left something they want taken. A better real world analogy is a bulletin board on campus or a wooden power pole. Lets suppose that it is super common that people staple flyers to power poles, with the expectation that people will read them as they pass by. Your analogy would claim that if I staple a letter to the power pole, expecting that only my friend that I told about the letter should read it, that passers-by are doing something unseemly by reading it, while being surrounded by want ads and for sale flyers that people do want read. Websites are nothing like mailboxes. The vast majority of websites would prefer that as many people as possible read their contents as much as possible. Email would be a better analogy.