New in the IE9 release candidate are Tracking Protection Lists; these let you limit which sites and online services can track you online via tracking cookies and . (Firefox 4 will ship ). Tracking Protection lets you block all sites from tracking you, or pick and choose which sites to let through. It's a welcome addition to IE9, but unless you know what you're doing, its usefulness is limited since you'll have to manually intervene if you want to allow something to track you.

In all, while there are still areas where I think IE9 could still improve, as a whole it feels like it's well-considered, and I look forward to seeing the final version.