I’ve been using this little trick frequently for a while now. I doubt “normal” people ever need to frequently restart apps, but when I start working on keybindings and other things that require fresh starts to take effect, it’s nice to be able to do so with a couple of keystrokes.
This is a companion discussion topic for the original entry at https://brettterpstra.com/2012/07/27/quickly-restarting-apps-with-launchbar-and-friends