Could someone with >10k on DIY.SE, or a mod on DIY.SE check whether
this post was deleted as spam? I was slightly unsure about it, because of the link, but couldn't see any affiliation. If it's not a spam, it's actually a reasonable answer, and I can't see why it would be deleted. (It has a downvote and at least 1 comment, but I can't read what the comment says).