@Jan Reimers - Thanks for that, it certainly hasn't been well publicized! However, I suspect that a simple indication in the Disclaimer section of most WordPress - or Akismet-enabled - blogs should be enough since the bulk of mail coming in, as spam, is from overseas anyway and gets dumped very quickly and other commenters are opting-in, effectively, by entering their information voluntarily. Including the Datenschutz wording, in German, would be a waste of time for anyone whose blog - as mine - is in English and aimed at the English-speaking Internet user.