I'm still discovering the functions of apple's latest iLife '06. I just found that the new 'photocasting' ability of iPhoto, is not limited to people posting photos with a .Mac account. I just tried iPhoto out with my Flikr account, and it works!
So if you have the latest iPhoto click file, then subscribe and use this to try it out with my Flikr feed. I'm adding a photocast feed to my sidebar for this, which will pick up pictures from our church community and the media arts explorations we have.