Oh, I know all that. :-)
The reason I decided not to recommend that site was not for my benefit but for the benefit of Mark and others who would see that ad and then think that in order to run the test they would need to click on that link first!
It's just like when we suggest MBAM and the poster winds up at Major Geeks and sees what looks like to be an instruction to first "click here" to scan for errors.
I seem to recall a link you gave for something useful a few months ago and the poster wound up downloading something entirely different! You need to remember most posters here are nowhere near as knowledgeable as you! Thus they are more likely to see something and become confused and wind up doing something you didn't intend for them to do!