The good news: more and more people are reading this blog. The bad news: more and more spambots are attacking this blog. So, for the time being, I have turned on comment moderation to prevent posts from being overwhelmed with spam postings. Thus, if you post a comment, there may be some time (on the order of hours) before I will be able to approve and publish it. In the meantime, I’ll be looking for other solutions to deal with the comment spam that don’t require such moderation.
You can try and use CAPTCHAs to filter out the bots, http://en.wikipedia.org/wiki/Captcha.