How does BlogBridge use OPML?
OPML stands for Outline Processing Markup Language, a format designed by Dave Winer which has become the de-facto standard within aggregators to exchange subscription list. You can see a snippet of OPML to the left.
Actually OPML can be used for a lot more then exchanging subscription lists. BlogBridge uses OPML extensively, although users don’t need to know or care about it.
In BlogBridge we use OPML in the following ways:
- Import and Export between different versions of BlogBridge
- Import and Export with other aggregators
- Publishing Reading Lists
- Subscribing to Reading Lists
- Much of the communication formats between BlogBridge and the Blog Bridge service
The one thing I miss in OPML is the ability to mention which post are not read yet. If I want to move from one aggregator to another, I want my list of unread posts to be preserve.
If I understand correctly, this is not supported in today’s implementation of OPML.
Comment by splintor — May 13, 2006 @ 4:36 pm