[Project_owners] Extensions using RDF and/or localstore

[Eric H. Jung]

From: Brian King <brian at mozdev.org>
>>What I like about RDF is that it enables you to easily maintain state across sessions.<<

Hi Brian,
Just curious--how does RDF enable this behavior any more than storing data in, say, a custom XML schema? Are there particular XPCOM interfaces which ease persistence of session state for RDF datastores?