Rated 1 out of 5 stars
Was a very good simple add-on, now it adds unicode characters to the filename making it a pain to edit files. ShameThis review is for a previous version of the add-on (1.2.1).
Thanks for the bug report, but you shouldn't use reviews for this. There's an email address ( https://addons.mozilla.org/en-us/firefox/addon/download-youtube/versions/ ) and a link to a userscripts.org page ( http://userscripts.org/scripts/show/25105 ), where you should report bugs.
YouTube adds some Unicode characters to the title, but I've managed to get a clean version of the title without control characters. This is fixed in the latest version, which can be downloaded from: https://addons.mozilla.org/en-us/firefox/addon/download-youtube/versions/ until Mozilla reviews it.