P.S. Paradoxically, the most secure communications on the Internet could IMHO nowadays be done by Mafias and other resourceful criminals. For they could open business of Internet cafes and callshops and conveniently exchange their encrypted secret messages via e.g. posting to alt.anonymous.email and in the worst imaginable case allege anything related to their IP-addresses to be from their (unknown) customers. In countries like GB, where the authorites could demand surrendering of encryption keys from holders of encrypted files, they could also without worries keep such files on their computers and, when demanded, claim these to be leftovers of their customers, thus avoiding the files being decrypted.