bypassing power caps

Hi,

I came in here after viewing this post hoping ya'll can shed some light.
Post -> http://forumz.tomshardware.com/ce/ [...] 41067.html

Anyways, I use AudioKarma forums frequently now and one tech on there constantly seems to advocate adding bypass caps to the power supply caps.

http://audiokarma.org/forums/showt [...] 080&page=1

My understanding has come to this:

1) Its a bad idea if you don't know whether its a high feedback system or the designer used the Transformer's natural reactance to high frequencies where you might cause instability by doing so.

2) That the frequencies most likely induced would be audio frequencies and that a film bypass of the values he speaks of would do very little to reduce them on the rails anyways.

Is he right to blindly lead people into adding these bypass caps? Should I respond any further than I already have or are my concerns baseless? Maybe I am just way off base here and have a lot more learning to do.

Thanks!
Tristan