I´ve found this site from an e-mail sent by Nik Peachey in the Learning with Computers community in response to someone who was looking for a tool to add captions to a video they had made. Well, with http://dotsub.com not only can you add captions to a video you´ve created but also add captions to any video from the net and host it there. It provides you with a link and an embed code of the captioned video as well. This is a video I got from dotsub about wikis. At the bottom of the player you can select what language you want to read the captions in.Watch and learn.