Edit: 12:04 PM Pacific time Apparently, the problem has been resolved. Non-LiveJournal users can now see the blog post and its comments.
Last night, I posted a rather lengthy essay about misogyny and bias in the skeptics and freethought community. This morning, I woke to discover that at some point during the night, LiveJournal had for some reason evaporated that post for anyone who isn't logged in (or isn't a LiveJournal user). It can still be accessed by its URL directly, but it doesn't appear to anyone who isn't logged in and goes to the top level of my blog.
The post is here, for people who are having trouble seeing it. Unfortunately, it also appears that non LJ users (or users who aren't logged in) can't see or leave comments. I have an LJ support ticket open on the issue.
If liveJournal is not able to resolve the issue, I plan to delete and re-post the essay. This may lose those comments which have already been posted, sadly. Or I may re-post the essay as a new blog post with a pointer to the old comments, if I can figure out a graceful way to do so.