What is FireUploader?
As the name says, this firefox extension allows you to upload/download files from any website using a friendly interface. In this version, only Box.net (1GB of free space), Flickr (photo viewing/sharing) are supported. Next versions would support other websites like Youtube, Google Videos, Yahoo photos etc.
If you use Box.net or Flickr you might appreciate how useful this extension is. If you’ve ever used an FTP application you’ll find this extension intuitive and easy to use. It is as simple as your desktop files on the left side, and the remote files on the right side. You then just drag and drop from one side to the other. It’s great!
Wandering the Interwebs 