A few people have remarked about posts that aren't showing up. Hopefully our excellent mods can shed some light, but it may not be a deliberate action on their part. The site seems to have been unusually busy which may be maxing the server out. It seems unlikely that benign posts would be deleted while some of the more contentious ones left up.
We're generally given a fair amount of latitude here so posts are only normally deleted with good reason. Of course, I haven't seen the posts in question.
Any ideas, Mods?