Review my application (2nd try).
dasht: I can't tell what your app promises to do for me from any of the information on the front page.   I can't tell what problem it tries to solve.  I can't tell what would actually happen if I uploaded a file.  All I know is that you want me to give you some file and it has something to do with sharing.  Only, you're a third party I've never met so, why the heck would you want a copy of my file?