In my mind, Domino competes with Exchange (and the winner is clearly Domino) and WebSphere competes with .NET. Of course many in this forum would want both Domino and WebSphere to win. The reality, however, is that .NET is going to win at least some of the big accounts. MS would probably like you to believe that if you choose .NET, you would naturally choose Exchange. I think it is critically important to let the world know that Domino is a great player in both J2EE and .NET environments. (For info on work we are doing in this regard, see
http://www.proposion.com/N2N.)