For starters - here’s the plugin I use to display latest pictures from Flickr on this blog. First of all - you have to have an account on Flickr. Get in touch if you want to - my screen name is cameracube. Once you are all set with Flickr - you may download the Flickr RSS plugin and set it up.
The problem that I have encountered was that I had no idea what’s the ID I must use for the plugin. The suggested ID search service didn’t work for me, so I am offering you a workaround.
In the picture you can see a screenshot. This is the screen you get when you click on You-> Your Photos. The highlighted bunch of numbers and letters is your ID for Flickr RSS plug in.