This message system is a new feature in Sewers (as of version 2010.11.07) to keep our users informed. When you launch Sewers, the software will check BJSoftware.com to see if there are any new messages for Sewers users. If there are new messages, the messages will be loaded and displayed automatically.
If you want to open the message system directly, there is a menu item for it in the “Help” menu. Or you can visit http://blog.BJSoftware.com in any web browser.