The Digital Edge Blog

While less well know than RSS, OPML is starting to get some traction…
So what is OPML?
OPML stands for ’Outline Processor Markup Language’ - not a particularly informative acronym.
It was developed by Dave Winer (et al) in 2000 as a tool to represent outlined items using XML.   Simply put, the intention was for people to use it to exchange generic hierarchial lists.  [...]