Creating and updating Flickr photostreams is much easier with
Flickr’s accompanying desktop application, Flickr Desktop Uploadr.
Besides making drag-and-drop batch uploading of your pictures a
breeze, it allows you to tag, title, set privacy levels, create
sets, and more–all from one quick, convenient desktop app.
Note: This link takes you to the vendor’s site, where you
can download the latest version of the software.