There seems to be a growing number of wierd anonymous comments to some of your posts. And I think the same person(s) scew other comments by clicking on the thumbs up/down in an irrational manner. Is it possible to require commenters/voters to be logged in? Hopefully that would make it easier to eliminate the unstable from continually insulting you or others. And, you would know their email address to contact them directly, if needed. And, ultimately, you could disallow their ability to post, as a "timeout."
You truly do a great job here. And I enjoy learning from you and others. Thank you, Mike