I don't care much what exact list software/service is used, but lists.sf.net hasn't changed in years and is basically dying. Trashing all @yahoo accounts because ancient mailman does a MITM attack on people's email is no good, it's not any better than a web proxy that breaks every SSL connection. For a project that is based on digital signatures, it's really bad that the mailing list is incompatible with Yahoo's "mail signatures must be valid" policy.