Well thats a flawed comparison. On the forum, in the "who's online" page, it says "username is reading ........" not "username has just entered his bank account number: ......." Whereas when I'm sending something in the mail, it will often contain a bank account number. And btw if I'm just sending a regular letter, I do use a postcard, why should I pay extra to send it in an envelope? I don't have anything to hide.
