Does raising speaker cables off the floor really make a big difference?

" What sucks are the people that peddle this stuff for "stupid money" prices while making all manner of empty claims (subliminal mental suggestions in this case) that are complete and total BS. That really sucks "
  GK my hat is off to you for being an entrepreneur and recognizing a fool will soon be parted from his money and why not help him and put it in your pocket. They abound here at AG so farm your field.

" That is why I am a little suspicious of over-priced cables and the questionable physics describing why you need them. The placebo effect is another matter which does not help. "
True words and if people insist on being idiots and unable to use logic take their money. Zip cord works fine for me and Heaven forbid sometimes it might even have a loop in it. Can the sharpie you use for CD's be treated in some way to improve things before use?:D

I think there are a couple of things to think of here.First I endorse the use of high density metal conductors. You see what many in the audiophile world don’t understand is that the space in between the interstices of atoms is larger or smaller depending on the element in question. So your pure Platinum speaker cable is a top choice to make.

Why you might ask and I am happy to answer. Have you ever heard a pop when your system comes on? This is more than likely due to electron puddling where the wire dips and the interstices allow for this electron puddling to happen. You see there is an accumulation of new fresh flowing electrons and then the puddled ones all propelled along at the same time and that surge from the puddled + new does this until the puddled ones are bled off.
Of course denser metal stops a percentage of this but still in all you DO have to think of conductor slope. I have found the very best answer to be to have the amp, assuming the amp to be the very last item in the circuit which does then feed directly into the speaker cable, must be elevated above the speaker with at least a 10 degree slope angle going down towards the speaker. No dips or sags anywhere and how you do that does not matter. Personally I find acrylic tubes in decorator colors work best and look good doing it. I have found through serious research that a slope angle higher than 30 percent will unduly accelerate low frequency notes as heavier things are affected by slope angle so be careful how steep you make your conductor runs.

Once you combine correct conductor metal with correct slope you will find your sound to be flowing and vibrant and none of the accumulated electron problems will arise.
  One word of caution though on the choice of acrylic tube. Stay with the clear tubes and not the tubes with dark hues to them as they will color your sound in a negative fashion.

" @mahlman: Are you talking about acrylic tube cable risers ? or what ? "
  Use the tubes as conduit. Any electrically neutral support will work like nice designer hardwood supports for instance will look good and work well in this situation.

@nonoise   How do you troll a fictional topic? Why with fiction of course.