As soon as I posted details of my new Atom API library to the SixApart ProNet mailing list, I got an email from their Manager of Platform Technology, and then another one from Anil Dash, both with hopes that I could include LiveJournal support.
I’m now in touch with one of their people who’s handling the actual implementation of their APIs, so hopefully I’ll be able to work out what’s going on and add LJ support to the code library soon. At the moment, my WSSE authentication is failing on the second request to their API, even though it’s working on the first one… curious.