Hi Utu,
yes I use LiveUSB DVD version and I've not found any further documentation about how to use it.
I've never used swap too and even with only 1gb of ram on my netbook, knoppix 6.7.1 works well, only when I work with high-resolution photos in Gimp I see some slowdown.
For everything else, I fully agree with you.

while waiting for suggestions from the community there is to read this article: http://www.thegeekstuff.com/2008/11/...mpfs-on-linux/

I do not know if there is a difference between zram, tmpfs and ramfs