A very handy add-on, with a lot of functionnalities. Everything I need ti download vodeos on the Internet. If I may suggest, quite often DownloadHelper offer 5 or more versions of the movie to download : it would be very helpful to know the size of each of them, in order to make the right choice. I almost forgot : Video DownloadHelper works fine on Linux Debian, Ubuntu, and probably others *nixes. Thanks for you great add-on.