I tend to neglect my census file uploads. I've considered writing some shell scripts to automate the process, but I do like to get credit and that would require a login. One thing that would streamline the process for myself (and possibly other apps like UniUploader?) would be a POST variable I could set to determine who gets credit for the upload. Does UU already use something like this?
Otherwise, I'll just fight it to make sessions work.
Also, I see what you're hiding on the submission form!