one thing I found that is really cool with the IE9 tabs (if you use Win7) is that you can rip tabs out of IE to snap them via aero snap (or just if you want to spin off a tab into its own seperate IE instance). You can also combine tabs from multiple IE instances into a single instance. That is pretty cool. Doesn't change the tab location issue, but can help declutter by using multiple browser instances for certain scenarios.