I've been trying to post a comment in the Bento4Japan Giveaway article, and I keep getting redirected to the preview page (which doesn't actually show a preview of anything), sometimes with an error message. (At first I tried without logging in, not realizing I'd been logged out; at one point it asked me to enter a Captcha image, which gave me the error message -- after that, I logged in and tried again, but it keeps showing the preview page instead of posting, even though I'm hitting "post comment.")