As I am always trying out new things and new ideas, I am now playing with a prototype of dj's pubsub component. It follows the pubsub protocol as proposed in JEP 0024 with the exception that it uses the pipetree:iq:pubsub namespace.
Now I needed an application for it and I came up with the following: you can now publish your mood to the pubsub component on my jabber server and have this mood show up in the Jabber World Map or elsewhere on this site. To do this you need to download a little perl script (and a .xml file for the configuration) in the download section. You can also find the corresponding bot there.
Happy mood publishing!