For some of us oldies does it ring a bell. History says listen to the customer. ccMail was simple to use and had Bulletin Boards. Lotus Notes was superior at that time but folks choose Exchange instead. Again it was simple to use and still awesome. I love it. I do use Sharepoint and it is a decent collaboration tool. There is some integration with Exchange/Outlook. I am hoping there is more. SharePoint cannot and will not replace public folders. I cannot speak for everybody I have played around with configuring mailboxes to do lots creative things. Configuring PF or Exchange Mailbox does not need huge investment for a small organization. For Large Enterprise too some of the major projects yes SharePoint is the answer. There is a cost associated. But in large enterprise there are the have's and the have nots. So What I am saying is what is the big deal keep PF's and show me more cool stuff integrating with Exchange. Also show me how do I migration path for those who are interested.