Super iGoogle compacts all of the unused space on your iGoogle page, making it neater, prettier and easier to use on small screens.
Each page element can be separately turned on/off using the settings menu or the following keyboard shortcuts:
Header: Alt+1. Sidebar: Alt+2. Footer: Alt+3. Minisearch: Alt+4.
You can set the sidebar to autohide (on by default) using the settings menu. This gives you quick access to tabs and chat without wasting any space.
Super iGoogle is totally free and open-source, so you can check for yourself that it is safe, efficient and well-designed. Super iGoogle is also compatible with Google Chrome: http://goo.gl/E3Glu