The amount of comment spam I get is unbelievable. In order to cope with it, I’ve had to set up comments so that first-time commenters have to be manually approved. What this means is that if you have never commented on this site before (it’s based on email address), your comment may not appear for a while. Do not panic and do not resubmit multiple times. I will approve it when I see it.
As a general rule, I approve all non-spam commments, regardless of content. That is a general rule. I don’t reject comments for disagreeing with me, but I will reject comments that call me names, use bigoted language, etc. This is my house, and while the door is open to all comers, I do reserve the right to throw people out.