We hope you've been enjoying the new XMPP API we shipped in App Engine release 1.2.5. We're always impressed with the cool scenarios our developers create!

A couple of Google engineers found the time to create cool App Engine demos using the XMPP API and we'd like to share them with you.

CrowdGuru - this app, courtesy of App Engine Developer Programs Engineer Nick Johnson, is a fun trivia game which crowdsources answers. Add crowdguru@appspot.com to your IM list and ask it a question. You can read up on full details of the design and implementation here.

Multi-Chat - David Symonds wasn't satisfied with simple person-to-person IM, so he built an IRC-like chat room system! Add multi-chat@appspot.com to your IM list and message it "/help" to find out how you can join channels and start chatting it up. Full source is available here, and a basic web interface is here.

Of course, please note that these apps are solely intended to demonstrate the power of the XMPP API - they are not official products in any form, nor are they supported. In particular, don't send any pri