Cool: just wrote my first Google Wave "robot" JSON web service
It is a placeholder, for now, but it will eventually use my KBtextmaster code to perform natural language processing on new replies to a wave that has my robot added as a participant. By following these instructions it only took about 30 minutes to get this going (would have been 20 minutes, but I compiled the Java AppEngine web JSON web service with JDK 1.5 - a re-build with JDK 1.6, and everything worked as advertised).
I have been working on the Common Lisp version of KBtextmaster in the last week, and the Java version badly needs a code cleanup also (both versions contain some of my code going back over ten years). I'll post the public URL for my robot in a week or so when I get a new version of KBtextmaster plugged in.