Silver vs. Cooper speakers cables

Has anyone used Gold cables? If so what do you think about their sonic characteristics (if any) compared to copper/silver?

I'm burning in a pair of Pear IC's presently, and getting some nice results considering <100 hrs of play time. http://www.pearcable.com
There's some interesting information on the properties of Gold versus copper/silver on the above website.

The price of Gold has rocketed of late, the UK are trying to take the surplus cash from their gold reserve fund and use it to relieve third world debt, but it seems that's not high on the US agenda. That aside, there are some interesting properties of gold when used as a conductor. It has a higher resistance than copper and silver and is therefore supposedly inferior as a conductor. Yet it has superior corrosive properties, therefore the inference is that it's sound will remain consistent for the duration of it's life, whereas copper and silver might me more prone to deteriorate due to the effect of corrosion and how the corroded layer creates unwanted skin effects and negative interaction with the insulator.
My understanding was that gold slightly attenuates the frequency extremes, and as s23chang say's gives things a sweeter sound.
The cable I'm using did indeed sound a little rolled-off at both ends initially, but surprisingly is starting to open up, particularly on the higher frequencies. This thing has a lot of potential and I can't wait to get another 100 hours on it.

Sorry Rsbeck, but we must agree to differ. I know my system and I know when the higher and lower frequencies are not sounding clear and extended. I'm past the 'it's all in the imagination' argument, so if you want to get into that one you'll need another sparring partner.
Also, I don't recal stating that silver was 'bright', either to look at or to listen to. It may or may not be, depending on other components in the system, and/or how often you polish it.
I can't imagine a three cables constructed from three different materials not sounding different. But that's just me. If there's a measurable difference in the three cables, which there is, then they ought to sound different, albeit subtly so. Maybe it comes down to the quality of supporting equipment, the state of cleanliness of ones ear canals, or just the time of the month for some of us, but there ought to be a difference.
Incidentally, that 1,000,000 would be handy, I could buy some Marigo dots and Peter Belt foils, and really knock myself out.