Fansubbing involves fans translating and subtitling foreign television shows and movies without official permission. While illegal under international copyright law, fansubbers argue it helps promote shows and can influence licensing. Some video streaming sites hosted fansubs, but Crunchyroll became a legal streaming service by removing unlicensed content and negotiating licenses. There is debate around the ethics of fansubbing licensed versus unlicensed shows, and how fansubbers should respond when other sites distribute their work without permission.