Pow R. Fac Tr. (Power Factor)

In another post, I mentioned how I had reorganized my power cables to better separate switchingf rom linear power supplies, and how there was an improvement in the system's sound.  While I was doing so, I took the opportunity to measure the power factor of each component using a Kill-A-Watt meter.
I'm wondering if anyone knows what influence power factor has on AC supplying the system, or has an opinion on whether it is more desirable to have low or high power factors, whether power conditioners offering power factor correction are useful, or whether components should be isolated on the basis of exhibiting similar power factors.
FYI, the class A/B solid state power amp showed a power factor of 0.65, an upsampler showed a PF of 0.93, and a (switching) power amp showed a power factor varying from moment to moment between 0.20 and 0.90.
I've never heard much about power factor discussed in audiophile forums, so maybe it is simply a meaningless measurement, but insofar as it changes the properties of the AC line, it seems plausible that it may impact sound quality, and that there may be better ways to achieve system synergy by taking power factor into consideration.
Thoughts?