I’m now on my third WordPress plugin that purports to mirror posts here to LJ, and it seems that the recent upgrade to WordPress has broken them all. So mirroring may take some time unfortunately. Meanwhile, I’ll manually post items to both blogs.
The one that seems to work the most (which of course is currently for negligible values of “work”) relies on LJ’s email-to-blog interface. I have set this up in the past, and have tested it from mail. I can see emails leave to go to LJ, but still no postings appear.