A Flickr photo Uploader Addon for Performancing (1.3+) for Firefox. It will check the pictures in the publishing blog, upload the local ones to flickr and update the link to url of flickr.
This works only with performancing version 1.3 or higher. You need first to have an account on flickr to store your photo. The first time you upload photo, you have to loggin and allow oakblog application to access your flickr.
After that, you can just use performancing as usual.
Performancing 1.3 support addon feature, so I adapt the former Flickr upload block to a separated extension.