Flup is a simple app for uploading images to Flickr by drag-and-drop and to quickly get the URL for the image file. Perfect for people who use Flickr to host images used on other sites (e.g. for blogging etc).
This was a quick hack done in a few hours so it's far from polished and have very few features. For instance, only one single image can be uploaded at a time.
Start the app and in the main menu, select "Authenticate with Flickr..." and follow the instructions on the Flickr web site that opens up.
When you're done, you should automatically arrive back to Flup.
Note: Flup requires Mac OS X 10.6 or later and an Intel machine (64-bit or 32-bit).
When a picture is dropped on Flup it's immediately uploaded. By default the uploaded image will be private (that is, only visible to you).