Microsoft Research is constantly experimenting with how to make our products and peoples interactions with software and computers better. I saw this add in for Outlook and thought many people could take advantage of the features it provides. Information Rights Management in the cheap.
NoReplyAll Outlook Add-In
The primary function of this add-in is to add a couple of buttons to the Outlook ribbon to prevent people from replying to all the recipients of your message or forwarding it. The add-in uses a facility built into Outlook and Exchange that is more lightweight than information-rights management but is not exposed in the existing UI. The add-in also includes a check for common email errors, such as omitting attachments or subject lines.