I think he's referring to people signing up on the list via your site.
This still appears to be down.
Any word on when this is getting back up?
And any chance of at the very least getting a better date on the error message? That Feb. 21 makes it look like this service has been down for a couple weeks and it has not. This makes it appear to our users that we've had an ongoing problem and haven't been able to fix it as promised, and makes us look unprofessional to our users.
I prefer not to look unprofessional for something that is out of my control