Podcatchers should be more interoperable like CMSs, feed readers, browsers already are. Tough to move from one to another. Perhaps we need a JSON Feed-like spec to be written to allow for this?

@adders I see that for some of them, but that doesn't sync what you've listened to, or haven't, etc. It'd be nice if a JSON feed could be created with your last 6 months worth of listening (or something).