Interesting, I hadn't noticed that! While responding to your comment I searched again and found a clue that they lived in Ann Arbor, MI, which then surfaced an obituary for Dennis B. Smith who certainly sounds like the author. https://www.familylifefh.com/obituaries/Dennis-Smith-62/#!/O...
I wish I had found them sooner to express thanks. If it's possible to reach their family I'd still like to revive the site another way; for a drafting junkie it really was one of the best things on the web.
The line " A special shout to our limo service San Diego for that one! " is a spammer insertion in https://web.archive.org/web/20170430095756/http://www.leadho... which makes no sense, and indeed, if you jump back over the gap of a few months to https://web.archive.org/web/20170121041802/http://www.leadho... , it was the much more logical in context " For collectors it doesn’t take long to fill out your collection of them with..." preface.
I wonder if it went offline because they couldn't deal with the security and maintenance?