Flickr Uploadr

If you don't want to use the Flickr web application for uploading pictures, Flickr Uploadr is a tool that lets you do it directly from iPhoto or from Finder.

Drag and drop the photos you want to upload to Flickr on the program's interface. From there, you can create new albums, edit the titles of the images, add descriptions, set the privacy level, etc.

You can also rearrange them into whatever order you want. And in case you're worried about how much space you have left in your Flickr account, Flickr Uploadr shows information about the status at the top of the window.

Once you've finished editing your album, just press the Upload Images button. If you still have more images to upload to another album, Flickr Uploadr lets you continue working while the upload continues in the background.