I asked about that back in May and was told that it wasn't workable by Admin. On a positive note, Admin has agreed to ban spammer email domain names such as "@spammerdomainnamesareus" etc. and that remediation effort is working very well. Yes, spammers can figure out they need to use different email domain names but they could also figure out to use something besides "shh" in their name as well. It's basically the same concept, applied at the other end of the email registration name. So far, it has substantially reduced spammers. No system is perfect but this really seems to be a workable fix.