mTurk File Storage?

I'm not sure what this is, maybe someone can enlighten me. But two podcasts are up that have http://storage.amazonaws.com/ in the url for the podcast. Neither have any relation to Amazon. So can requestors now upload files to mTurk for users to view/download directly?

And if so is it a good idea considering the effects on your bandwidth? Or could you bypass your server and have the user upload it directly to mTurk's server?

Usually I try to provide answers here and not questions...But this just seems odd. I don't see any updates on the documentation or anything on it. Perhaps a new feature in testing?