So let me see if I have this straight: you differ from other file uploaders out there (e.g., https://github.com/blueimp/jQuery-File-Upload/) in that you allow "upload from anywhere", plus a quite nice interface? Not to belittle it, those are solid additions to the space.

edit: Btw, if you're looking for IE support on the from-computer upload, look into using iframes for transport.