Uploading large numbers of photos to Flickr can very time-consuming. I have thousands of photos in hundreds of folders. With Flickr Uploader you must open and add images from each individual folder. It was so not fun doing this that I stopped uploading my archives.
The Firefox Universal Uploader (FireUploader) is a FireFox Extension that really streamlines to process up loading images to Flickr and many other web site services. It provides a two-panel side by side view of the local and remote folders and allows you to transfer files bi-drectionally.
You can select multiple folders for uploading. FireUploader has uploaded hundreds of images without error and you can easily define the parameters to add to files. For example, Sets - which are an important element the organization of images in Flickr - are shown as folders in the FireUploader interface. Fireuploader that simplifies and standardizes the way to access files to over twelve web services including Google Docs, Picasa, Box.net, Adobe Buzzword (with 5 GB of free storage) and many more.
Being a FireFox extension, FireUploader is very easy to install and it notifies you of updates automatically. FireUploader supports multiple user accounts for each of the web services - which means you are not continually having to log in and out of a web service in order to manage files for multiple users. An interesting feature is that a reminder pops up whenever you enter a web site that FireUploader supports.
FireUploader is a very powerful utility with a very straightforward user interface. It is becoming an increasingly used tool in my browser.