But, most importantly, we're making it possible for a lot of people to collaboratively work on creating captions and subtitles, and we think that the only way that you can get captioning and subtitling done on thousands and millions of web videos is if you ask the viewers to participate, and we think it is really a Wikipedia-type problem - something that's so huge in scale and requires so much distributed expertise that we need to bring people from around the world in to help make video accessible.