Sean and I thought the Karaoke Card mailing list was partially fixed, because some people were receiving them and some were not. We have traced the problem to Yahoo email addresses. The workaround for this problem is to get an email address from somewhere not from Yahoo. We don't know any other solution for this problem at this time.
As far as we know, everyone who needs the Karaoke Card is now receiving them. If anyone else would like to have the cards sent by email every week, just let us know.