Don - I did read and understand what you said a couple of postings further back, and agree that if I use the exact same phrase, it will produce the same result (although at a later date different web sites may well hit the top spots).
What I am trying to say is that, although I would be trying to google an equivalent question, your exact phrase is not the one which would have come into my head. Because of that, I wouldn't have found the Dennis Havlena site as easily as you did.
If, however I had asked on Mudcat, someone else (You), would have found it, and that is one of the things that make Mudcat as a whole more informative than any single one of us.
Quack!
Geoff.