Amazon S3 Storage and Firefox S3 Organizer Addon

"As part of Amazon's AWS service they provide online storage at very low rates via the Amazon Simple Storage Service (S3). S3 combined with the S3 Amazon Firefox Add-on provide an extremely easy to use means to upload files via the Firefox web browser. Just open the add-on that resides in the lower right portion of Firefox, select (double-click) a destination folder or "bucket" as Amazon calls them and then use windows explorer to browse to the file or files you want to transfer, select them, and then drag and drop into the add-on user interface."

http://hothardware.com/News/Amazon-S3-Storage-and-Firefox-S3-Organizer-Addon/