I've suspected for a while but now am sure that this website, hosted through Yola, has a mind of its own in terms of what it does with content I've uploaded. A few people have emailed to ask what happened to the zombie plan - I can confirm it was uploaded in August, was there for a bit, then appeared to disappear. Yet when I log on to the site manager to upload it again it's magically reappeared, as have several blog posts and other content.
This raises the question of whether I should continue with this site at all or migrate to another service provider. I haven't decided yet, but in the meantime, if you're looking for any material on zombies, booktalking or censorship in particular that looks like it's fallen into a black hole, please get in touch and I'll email you a copy.