Desktop Flickr Organizer is a flickr photos organizer right on your own desktop.
Why should you be using it?
Flickr's web based organizr is slow, updates take time. You can only use it when you're online. DFO on the other hand, stores all the updates offline, and with a simple and intuitive graphical interface, allows you to be way more productive. You'll never dread having to organize sets, edit titles, descriptions and tags for the hundreds or thousands of photos you've accumulated. And you can do all this editing, when you're just trying to kill your time in train, or that long plane trip.
What all does it provide?
1. Uploading and downloading of photos. You can download selected photos or the entire sets.
2. Edit information attached to photos; delete photos from stream.
3. Add/Remove tags associated with photos.
4. Create new sets, edit set information, add/remove photos from sets, delete sets.
More about it on its homepage http://code.google.com/p/dfo