Flickr Set Manager (author David Wilkinson : http://www.dopiaza.org/flickr/setmgr/) allows you to automatically create new sets on Flickr based on various criteria such as interestingness, date posted and tags, or even from a random set of photographs.
Click on the link below to start. Before you can start using it for the first time, you will be taken to the Flickr web site and asked to grant permission for write access - this is so that Set Manager can create new sets in your Flickr account and add photos to them. Don't worry, you can alway revoke this permission at any time by going here.
Start managing my sets