I got a comment pointing me in the direction of another site specific browser Bubbles. This is a Windows SSB that has many of the same features as the ones I spoke about in my earlier post on this topic. This one also has some cool extension capabilities that enhance the SSB experience. For example you can get an extension for Yahoo mail and you will get System tray notifications when you get new mail. I applied this to Workspace and every thing worked great, here is a screen shot:
The extensions could be powerful in the context of BI and EPM. The first thing that comes to mind is notifications like the ones in Smart Space or some how tie into the notifications in Workspace. For now I just like having Workspace always running in my system tray.