Some of you have reported finding that every now and then one of your comments isn’t posting, even though there’s no apparent reason for it. I believe this is due to some rather restrictive settings on my spam filter at the moment, and that it should be a temporary problem. I hope to correct it soon by making the captcha mechanism more functional in eliminating the spam, and then the spam filter can be made less restrictive. Apologies in the interim to everyone who’s encountered any difficulty.