Data portability's higher ranked, but interoperability ties into it for me. They're not quite the same, but they're definitely linked up.

Interoperability is something I desperately want more of, ethical opinion aside, because I really kind of hate having three social media networks to deal with, all with very different interfaces. And that's really not very many at all to be managing, given all the choices out there. RSS definitely helps, some, but not fully.

I'll be very curious to see how many people bail on LJ when CARL goes live here. I can't begin to guess, to be honest, but I think whatever the result is it'll tell us something about the value of interoperability to Dreamwidth. Maybe not everything, because LJ is one pretty smallish fish in the sea for the English-speaking blogosphere, but I do think it'll tell us something.