• autoHideStatusbar
  autoHideStatusbar is a Firefox, SeaMonkey, Thunderbird and Flock extension that hides the status-bar. The status-bar is shown back when hovering a sensitive zone with the mouse. In Firefox and Flock, the status-bar can be shown back when a page loads or when hovering a link, according to the preferences. Additionally, a status-bar icon and/or a toolbar button (not in SeaMonkey) can be used to quick enable/disable
  autoHideStatusbar: a Firefox, SeaMonkey, Flock and Thunderbird extension that hides the status-bar
  autohidestatusbar extension firefox flock hide seamonkey status-bar thunderbird
  in Software > Mozilla Project > Extensions with autohidestatusbar extension firefox firefoxextension status-bar statusbar thunderbird

status-bar from all users