Nice touch
When you close the last window in Firefox for OS X, it keeps running, like other OS X apps. This makes it unnecessary to employ hacks (using Tab Mix Plus, for example) that prevent the last tab from closing (which also prevents any window from closing at all when using the keyboard, which is not what I want). What’s nice is that hitting ⌘-L (to go to the location bar) opens a new window when no wndow is open… nice.
