To those who post comments

I’ve been starting to get a lot of auto-generated spam in the comments section.  In order to avoid this, I have turned on word verification, which simply means that, before posting a comment, you will be prompted to re-type in a word that is shown on the screen.  My apologies for this.  I don’t think it should be too cumbersome, but if it turns out to be a real hassle, let me know and maybe I’ll have a rethink.

Thanks.