the little button in the top right corner that hides the toolbars? really cool. a sidebar has space for many more entries than a bookmarks toolbar, and with documents being narrow and long, and screens becoming wider, you really want to maximise vertical space and put additional gimmicks off to the side, and only show them when you need them. navigation? just use mouse gestures. location bar? you should hardly ever need that, and when you do, there's always cmd-L. web dev toolbar? hardly ever need that either. put it all away and it feels oh so right. makes me want to auto-hide the tabs and the status bar and put sidebars in a drawer. just imagine how squeaky clean that would look. anyway, you can get 90% of the reward for 0% of the effort. just try that little button right now.