ChromolyWally, that link should do a lot to dispell myths. I think it does a better job of explaining than http://www.rouesartisanales.com/article-1503651.html
does, although that's a good one too. The only problem I see in the bikeradar.com article is what many of the commenters wrote, about the fact that 25% more rolling resistance and 25% slower are two very different things and the latter term was misapplied.
"...the key to reducing rolling resistance is minimizing the energy lost to casing deformation..."
What was not pointed out is that a narrower tire's casing has to deform at a sharper angle at the edge of the contact patch, which is why the narrower one has more
rolling resistance (ie, consumes more energy) compared to a wider one if both are at their max pressure or the same percentage of it, all other factors being equal. Unfortunately the best-performing tires are not made in widths above about 25mm. It would be nice if the same construction and quality were carried into tires of at least 28mm, especially for tandems where wanting a bigger tire doesn't mean you'll be going off road. The article did allude to the fact that a thinner tube reduces rolling resistance because there's less rubber to deform. I've been using Performance's ultra-thin 49-gram LunarLite tubes for this reason (not particularly to reduce weight). I don't get any additional flats, they're just as easy to patch, and spares take less room in your bag. (Just keep it in a ziploc-type snack bag with plenty of talc.)
There are several web pages comparing the rolling resistance of various tires, but they don't get updated as often as they should. One I like but I wish they tested a lot more tires is this
one. Continental definitely did a lot of things right in that GP4000 which took the gold. Besides being a hot performer in rolling resistance, it is the best tire I've ever had for puncture resistance and life as well. It has a combination of strengths that was previously impossible. Who would have thought I could get more than 4,000 miles on the rear
with one of the greatest racing tire and still pull a box staple out of it and not have to fix a flat because it did not penetrate the vectran breaker layer!