Google <i>has</i> improved Google Groups; it's now integrated into Google for Domains. Groups now work like email accounts with shared permissions and mailing list tools with the old Google Usenet web interface.<p>As of last month: <a href="http://googleblog.blogspot.com/2009/12/join-this-group-google-groups-joins.html" rel="nofollow">http://googleblog.blogspot.com/2009/12/join-this-group-googl...</a><p>(not affiliated with Google, but wanted to set the record straight)