The post linked shows an idea of what the N900 would be like if it had 9 homescreens
1. This may seem overwhelming (4 is already too much for some), but consider than with one touch/swipe you can access all your apps/widgets/bookmarks.
2. No scrolling through menus, hunting for the app your looking for. Consider than in pressing the menu button is already one motion, and you might stilll need to scroll and find that app. Here, one swipe gets you to the position of your app.
3.From any homescreens 1-9, you can reach the others within one swipe....


CLICK