So there I am being a good citizen and not releasing confidential information and then I read about Cougar on the web. I then find that my fellow bloggers are also talking about these products in some form or another. Finally, to top it off, I am challenged by Susan Bradley to answer why Small Businesses need Exchange 2007 . Enough is enough, so I decided to finally start the conversation on these products. 1st up, lets examine Exchange 2007. You can NOT run it on an existing SBS 2003 server as it requires Windows Server x64. The various features and licensing of Exchange 2007 are discussed on my post here . To get Exchange 2007 today, before the launch of Cougar, you will need to buy a 2nd server, Exchange 2007, Windows 2003 Standard x64, Exchange 2007 CALs. This is NOT something for most small businesses. So who is it for? If you want: People who need LOTS of Exchange storage People who like the idea of a continious backup of their Exchange store Unified messaging (including phoning and talking to youe Exchange...