It had to happen sometime- we've been invaded by the spambots/trolls. I don't want to institute comment moderation, so for the moment, I am just going to remove the odd/offensive posts as I find them. Please be patient with me if I don't notice them right away.
For the spammers/trolls: be aware that if your link takes people back to some commercial site, or is obviously meant to offend or inflame, or is needlessly confrontational, it will be removed. Period.