ressu has created his own implementation of a Mood publishing script in Python. The script checks regularly which moods are available from this server and lets the user choose from them. It uses the experimental JEP-0060 (Publish-Subscribe) to send the mood information, just like my reference implementation.
Since the JEP is still experimental, the pubsub component used is not complete (or even up-to-date). New users have to be added manually because of this. Let me know if you are interested in having your mood shown on my site.