"GreaseMonkey user scripts are great, but you need to publish them somewhere and re-publish after making modifications." Publish them where? I don't understan

"GreaseMonkey user scripts are great, but you need to publish them somewhere and re-publish after making modifications." Publish them where? I don't understand this. Whenever I change a user.js file and save it the browser updates it and it's ready to go next time the page reloads. Side node: Scriptish is a fork of greasemonkey with many cool extras. https://addons.mozilla.org/en-US/firefox/addon/scriptish/ https://addons.mozilla.org/en-US/firefox/addon/scriptish/