.Mac Slides Publisher
Apple has added ".Mac Slides Publisher" (download) as another feature of .Mac:
Present your photos online with ease
Connect with family and friends by sharing your latest memories as a personalized screensaver. Mac Slides Publisher takes your favorite photos, transfers them to your iDisk, and turns them into a screensaver that can be viewed by any Mac OS X version 10.2 user.
The subscription feature (available to OS X 10.2 users, no .Mac account required) provides live updates, allowing automatic updates to slideshows. This feature emulates one advantage of the internet-connected LCD picture-frames that have been on the market.
.Mac integration is expected to increase and add functionality to other iApps.