Flickr Slideshow Generator
This useful tool allows you to create the necessary code to create slideshow that can then be added to your website or blog.
Head to fabiocavassini.com.ar/SlideShowGenerator.html to start using this add-on, where you will be prompted to input a user NSID code in order to create the slideshow.
So what is a user NSID code? Well, it’s a type of identifier associated with your Flickr account, but you probably won’t have seen it, or know what it is. To find out, head to idGettr.com, where you will be able to input your photostream or group pool URL (for instance, the photostream URL would be http://www.flickr.com/photos/[USERNAME]/) to reveal the NSID.
With the NSID copied, paste it into the Slideshow Generator tool and click Generate!. A preview of the slideshow will be displayed alongside the necessary code that you can paste into your webpage HTML file.
(Note that Live Journal and MySpace have blocked this service.)
Screenshot provided by author.