There apparently is a cottage industry of posting spam in comments on blogs. Most recently, a 'gg' has been posting in what appears to be identical Chinese characters. I hope that the content is not offensive.
My policy is to allow all posts that are on topic and respectful of other's opinions. However, I have turned on a feature that requires you to enter characters displayed to post a comment. I dislike this feature whenever I encounter it, and I'm sorry to have to enable it here.
Please do continue to post comments! They let me know that there are interested readers and allow me to answer questions.