It is ironic that every day millions of people CC and BCC emails without a clue as to why the sending of a copy or a blind copy, that is, without the recipient being shown, is designated as CC and BCC. It is even more ironic that the intials come from a an item that teenagers, madly SMSing, emailing and CCing, have never heard of, seen or handled.
The initials mean Carbon Copy and Blind Carbon Copy.
