Briefly, binding posts are one of the worst offenders in terms of audio degradation (thick metal and its affect on the electromagnetic wave as a waveguide).
Having studied power transmission lines, EM radiation, waveguides and electronics, I would simply like to point out that most electrical engineers (that I know of) would disagree with the above statement (when dealing with signals at audio frequencies).
I am not disputing the fact that many people are convinced that they hear something different...I just beg to differ on the scientific explanation.
As far as science is concerned (to my best knowledge), one should not expect an audible difference from any of the commonly used binding posts (provided a suitable connection is made).
Describing a binding post as "one of the worst offenders in terms of audio degradation" is a patently false statement (IMHO).