See: http://www.eventedapi.org/spec
As we consider what can be done to move PubSubHubbub forward, it might make sense to take a look at some other protocols that folk have defined to determine if there is anything in them that PubSubHubbub should be implemented or if they do things better that PSHB does. The folk at Kynetx ( http://apps.kynetx.com/) have been building up a PSHB-like system for some time now... I'm not sure I understand why PSHB wouldn't, in fact, serve their needs. bob wyman
