So assuming that you all bought into my prior model of using the MMORPG
as the event model, and XMPP as the Message Bus for said events, the next
thought I had was regarding the events themselves.

Each event needs to communicate at least two things, what happened, and
what did it happen to.  What is also good to know is what did it for
authorization
purposes.  At some point the security model where not all session members
have complete control over the shared resource needs to be addressed.

I propose using the Extensible Resource Identifier (XRI) (if you don't
already
know, please look it up as I can't explain it in this brief email) as they
way of
describing what did it happen to.  I'm sure some bright spark can also use
it
to describe the "What Happened" too.

In short XRI has thought about how to address objects, their properties, and
even fragments of the properties as well as attributes of all of the above.
They
took from URL and URI, and IRI (internationalized) and extended it so it fit
well within a Federated XML world and could be referenced through
"synonyms".
In other words, multiple identifiers can be used to identify the same
object.

It's the federation and the synonums part (where different authorities can
control different parts of the identifier) that really made me take notice.

The folks who worked on that spec really thought this thing through and
seemed
to know the subject matter of what would be needed well.

Thanks for the chance to share my thoughts,
-- Michael --