A year or so ago, I had to enable Word Verification for my Comments section because spammers were leaving marketing links there. This has worked well. Until now.
In the past day or two I've received some comments that -- in my opinion -- were racist, immature, and offensive. I've chosen to delete them, but it may be that a reader or two (thanks, Lois, for the headzup) saw them before the removal. If so, I'm sorry that happened.
Have decided "Comment Moderation" is the way to go for a while until the person (or persons) who seems to be a lonely, unhappy, racist who doesn't have enough interesting or important things to do, loses interest. He or she may decide to continue to leave their unpleasant comments, but at least you won't have to read them.