Does what it should Rated 4 out of 5 stars
I got this addon to be able to hide the navigation bar as well as the status bar in full screen view without completely losing them. Unhiding the navigation bar by touching the top border is intuitive, so is showing the status bar on activity like displaying a link's location. I shortened the hiding delay to 1500ms as that's sufficient to my need (4000ms is a tad too long for my taste).
What's unfortunate is that it doesn't play well with the Tree Style Tab addon which I use on my widescreen netbook, the area of the Tree Style Tab (which I put to the right) is not hidden, but the containing tabs disappear nevertheless resulting in a huge gray unused field.