I've been using some different tools for uploading my images to Flickr, but all of them were too slow, resource consuming or GUI dependent. So I went to CPAN, found Flickr::Upload and decided to give a try since it seemed the right tool for the job. The result was amazing! For me, best Flickr uploading tool ever.
I'd like a few more examples on using different auth/key/secret credentials, but I was able to deal with it after skimming the first lines of code.
Anyway, I'm so happy with this module that I decided to package it for Ubuntu and make it publicly available from my account on Launchpad (so my friends or anyone else can install it very easily): launchpad.net/~alex.muntada/+archive
Next step, make it official in Debian and Ubuntu. It's definitely worthwhile.