http://blogs.technet.com/tarpara/archive/2008/05/06/masses-rejoice-xobni-goes-public-beta.aspxXobni , the small San Francisco Bay start-up, has gone public with their Outlook, and now Yahoo Mail, plug-in.  If you recall, I wrote about Xobni a few months back.  Having been on the private beta, I can only say, that Xobni has really changeden-USCommunityServer 2.1 SP1 (Build: 61025.2)