That article is referring to DIGITAL cables when it talks about signal quality. With a digital signal (HDMI, DVI, Optical, etc) there is no degredation due to cable quality to a certain extent. As long as the signal in = the signal out, it is all good; go as cheap as possible.
RCA cables, or other analog cables (coax) are definately subject to requiring a higher cable and you SHOULD ABSOLUTELY make sure to get a quality cable or make your own. I would never buy Monster, but I would make sure I had the recommended shielding and/or strand count for the task at hand. I usually build my own from pro grade connectors and a 'spool-o-wire' and still come out waaaaayyyy cheaper than buying a Monster brand or similar.
That article specifically references a $1000 + audio cable, which is absurd. There are those more fortunate that will buy it and be the fool though; usually the same ones getting suckered into many more flavors of life as well. Some of them probably read this forum, and did other things, like buy iphones before the price drop, caused the housing in Pheonix to skyrocket by paying over face value on a home once they left SoCal, buy gimmicks to improve gas milage, and wear "vote for Hillary" shirts while hangin out with Hugo Chavez.
Also, while shopping for analog cables, keep in mind it is only as good as the weakest component. Triple gold plating doesn't mean much if it is using tin solder.
Anyone looking into building very high quality cables using parts available through mail order and getting DIY gratification should watch the systm empisode on it. He even throws out some preferred brands and connector types to look for. http://revision3.com/systm/avcabling
(Message edited by olskooltige on October 02, 2007)