Picasa web album included a featured page where best web albums and photos are archived. The featured picasa web album provides an RSS feed where you can add it to feed reader or you can make it as screen saver via Picasa.

If you don’t have time to browse featured picasa web album page you can add image slide show gadget for your iGoogle home page, where you can view featured slide show from various search results like Flickr, Picasa Web and Google Image Search etc..