Minimize space devoted to so-called celebrities on Yahoo's home page. Really don't give a bleep about 99.9% of them.
If you are going to have a tool bar, then try to have one that does not use so much of the display face. I have just deleted the AT&T tool bar, and am delighted with the change!
I'll own up to posting this; I really jealously guard screen space, both to the top or bottom of the screen, but sometimes, as when I have a spreadsheet, to the side, too. I really dislike using so many of the lines of the screen for the icons used in navigating the screen. A pull-down on the very top line, from which the minimizing, closing, and display portion buttons are located would be my ideal.