One of the coolest new features in Windows Vista is the way folder structure is displayed in the locations bar. Vista organizes it in a way that makes it much more readable, and adds new features such as being able to back-track by clicking on folders in the location bar.
Just like any other cool feature on other browsers, someone has taken the idea and turned it into a useful extension for Firefox. Introducing Locationbar2.
There are three main features that make it worthwhile to install Locationbar2: