When you install the Enterprise Portals, by default, all of the sites are displayed within the navigation bar. This is OK if you only have a couple installed, but if you have them all up and running, and then start to create collaboration workspaces, the top navigation pane can quickly start chewing up your screen real-estate, and more importantly make the screen look untidy.
Luckily, since this is built on SharePoint, you can easily change the default settings so that you just see the current portal name in the navigation bar, an everything looks so much cleaner.









