Great! Rated 4 out of 5 stars
Extremely useful and easy to use. Can be used to create a toolbar button shortcut to any file, not just to executables. I used it to make a button for userChrome.css and one for Replay Video Capture. It will not, however, creat a shortcut to a folder.
Unfortunately, the buttons cannot be positioned separately on the toolbar. They all stay together. I'd give this 5 stars if separate positioning were possible.
Extension adds only space for buttons. You can move this space to any toolbar, but with all attached buttons together. I not plan separate positioning buttons.