Amazon have a system where you can set a private url that expires after a short time. The expiry is encoded into the url so it can't be changed. Attachment_fu supports it with something like: file.authenticated_s3_url(:thumb, :expires_in => 5.minutes.to_i)
Andrew Timberlake http://ramblingsonrails.com
http://MyMvelope.com - The SIMPLE way to manage your savings
