What I don't get is how that page was identified as such by the spammers. Presumably they did not perform the same Google search as I did. So perhaps they evaluate every page on a given (comment-enabled) web site and check them all with some algorithm? A purported "page rank checker" gave both that page and one from the same time period scores of zero--- I don't know if there is some other tool which might show a difference.
(The other post which tends to attract a lot of comment spam is this old rant about Bing advertising. I have no idea what's attractive about that one.)