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We've got a joining page working, please go to this page for the moment. Sorry it's taken so long.
For those who get mailing list digests (one post a day with everything in it), sorry about the delay , it looks like things aren't fixed yet. It's still a problem with majordomo, something to do with the archive numbers. Another attempt will be made to make it work tonight.
Naturally we could send an email about this to the list , but those who get digests (ie those that care) wouldn't see it :-)