Second Electronic communications. unwanted e-mail <br>Users may not send e-mails to people who do not want a receipt of such e-mails. It is explicitly prohibited such "bulk mail" messages ("junk mail" or "spam mail") to send any kind (commercial advertising, political tracts, announcements, etc.) or this or similar messages to a large number of newsgroups (or similar Send to organized systems) (excessive "cross-posting" or "multiple post", also "USENET spam"). Users may not forward or propagate chain letters or malicious content or