there was a blog posted a few weeks ago.
I have been over promising documentation for a few months now.... but
I will deliver at some stage in the very near future.
Meanwhile, just download jetty-6.1.7 and run the standard
java -jar start.jar
the cometd.war demo is installed by default and you can pick that
apart to see how it works.
cheers
Well I have made a start:
http://code.google.com/p/cometd/wiki/BayeuxCometdDocumentation
it is only a skeleton today, but I will add more every day.
cheers