The link you just posted requires me to log in, and I've had this problem with go-nuts and the OCI mailing list in the past. It's strange this doesn't happen to you -- maybe it's a geographically specific thing (I'm connecting from Australia)?

Of course you don't need to login in order to post on the mailing list, but I think that's only one of the three main features of a mailing list (broadcast, subscription, and archival) that I can do without logging in.