I think it would be a really good idea to have the same approve/deny controls over who registers to watch videos on a Private GoToStage channel that we have over who can attend the live webinar itsel...
Just seems amazing to me that there isn't a simple way to blacklist email domains from registering. Would be so simple to add competitor domains and freebie email domains to keep the tire-kickers and competitors out, and let valid, interested parties in.