This is so if there is another application on the server that is used in conjunction with our business, then it can be selected from right off the TABs and opened. For example, an accounting program or a forum like SMF or PHPBB (in addition to the "Messages" blog/forum built into OpenGoo).
Don't get me wrong, I really, really like the simplicity of the Messages and would still use them. But just some way to add another tab to include a url to another app/location.