Open source subtitling

I've recently came across a very interesting subtitling website. They have an open source catalogue of subtitled films and extremely easy to use subtitling tools for those who want to contribute. You can chose a film (independent production) and subtitle into your mother tongue, which will then be available on their catalogue. I think it's a great initiative as it will make lots of independent films available in different languages. The films are usually short (up to 20 min) and the translator gets the name on the credits and link to a website. The only downside is that anyone can translate the films, not only professional translators, which will definetely present limitations to the quality of the subtitles. Anyone interested? dotSUB.com