I read in a recent ADC News email that Apple has released some Rendezvous sample code (PictureSharing and PictureSharingBrowser).

Accordingly, I’ve been wondering what I can use it for. Here are a few ideas.

• Browser bookmarks
• Address Book contacts
• List of running apps
• iTunes tracks (wait, no, scratch that one)
• iCal calendars (can you do this already?)
• URLs/titles of currently open web-browser windows in all running browsers
• Sticky notes' contents (I'd use this one all the time)
• Contents of text files in a chosen "watch folder"
• Content of a log-file
• Output of a terminal task (top, mail, etc)
• CPU load
• Web sites, both root and ~/Sites (Safari already does this)
• Contents of the Script menu (for execution on the hosting computer, with authentication)
• Screenshot taken periodically
• Pic taken by attached webcam periodically ("localcam"?)
• Your idea here

You can achieve a lot of this via remote login, but using Rendezvous has the benefit of autodiscovery of hosts, not needing an explicitly-created account previously, and the fact that you’ll probably cobble together some kind of UI when implementing the functionality.