I find the add on to be wonderful and have been using it for years. I am very much appreciating the update the former updates for keyboard shortcuts (e.g. Alt+Shift+Right for faster speed).

However, since the last update, the new keyboard shortcuts conflict with FireFox's default "Ctrl+Shift+Left" as well as "Ctrl+Shift+Right" (e.g.a for the address bar as well as find bar). This sadly reduces the workflow and everyday use. I guess it's easy to fix and want to Thank You in advance! Since I think it's the #1 Playback Speed service, it's worth 5 stars even now. (For more details, there is already a thread form another user on github.) Thank you!