Are there any differences regarding licenses and costs when using Plone commercial and non-commercial settings?

See note above for current state of dual-licensing. No. Plone is issued only under the GPL.

We make no distinction between for-profit and non-profit use. More.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.