We’ve instituted a new measure to fight comment spam. When you post a comment you’ll be asked to type a word to verify that you’re a real person commenting and not some spambot. We know it’s a hassle, but we needed to find a better solution to cut down on our maintenance and keep junk off the site.
We’re still perfecting the system, so currently the comment preview feature isn’t working. Hopefully we’ll have it firing on all cylinders soon.
Thanks for your patience.