October 20, 2003
OPML
My poking around in the world of RSS has inevitably led me to OPML, another XML format created by Dave Winer, and is ostensibly designed to contain outline-structured information. What is outline-structured information? A fancy way of saying a structured list of hierarchical content, like browser favorites or web directories like Yahoo. It seems any list will do, actually.
I'm interested by what I see, but I'm still reserving judgment. It looks like OPML will be/is valuable in the same space as RSS (e.g. weblogs), but I can't find a concrete description of the specification (so far, at least) beyond version 1.0—yet I keep finding OPML files online referring to themselves as version 1.1, and each one has a slightly different set of attributes. Is there a 1.1 spec? Or is it only proposed, letting content creators add features willy-nilly? Hmmm.
