List all the files in a folder named "Kindle" in your drop box. Assuming these are PDFs you can download them using the web browser on your kindle and read them there.

Toranado web http://www.tornadoweb.org/ Dropbox Python Library https://www.dropbox.com/developers/releases Redis (stores the auth... could easily be replaced)

several reasons.. I start this project with xAuth, it should be oAuth since I unless you plan to host this using SSL This was done quickly there could be some clean up.