I went through all the questions tagged with [tag:copy.com].  Each and every one of those 12 questions (the 12 remaining after you removed the tag from the post you referenced) is actually in relation to the now-defunct `copy.com` agent and client.

Because those questions are all using the tag correctly, and it's a significant number of posts (12 is not a small number of legitimate-tag-use questions...) I'm not comfortable removing the tag because the legacy questions that still use it are all legitimate questions.

To that end, I suggest you just remove the tag from the offending post you outlined.

I have made revisions to the tag wiki for that tag to indicate this tag should not be used, and is kept for legacy purposes in the interim.