I seem to remember something like this a long time ago, but I just realized that all my single, straight quote marks are being stripped out when I post to WordPress. At first I thought there were just a couple of careless typos, but after manually fixing these in Mars Edit and reposting, they are gone again. Smart quotes and double quotes (straight/dumb or curly/smart) are not affected. If I edit the post in WordPress (a pain!), they are fine. Any ideas?