A word about comments on this site

I was just forced to delete a comment on this site, an act I really find unfortunate and distasteful. However, let me be very clear that personal attacks are not tolerated on this site.
The conversation where the deleted comment appeared had veered close at one point to my having to step in, but I was gratified to see that both participants pulled back quickly.
The deleted comment crossed the line.
There will be no hate speech, name-calling or personal attacks of any kind in these discussions. Such comments will be deleted. And if they happen too often I will be forced to moderate comments on this blog, which I would rather not do, as I’d much rather see a free and open conversation in this space. So please be clear on this point. It seems a rule that is simple enough for us to all follow.
Thanks.

Mitchell