When developers give source code back to the Plone community, will the Plone Foundation at a later point then include this code in a future commercial release of Plone?

If it's checked into the Plone SVN (not the Collective) as a change to Plone itself, both the Plone Foundation and that developer has full rights to that piece of code. So if Plone Foundation licenses Plone under a commercial license, that code will be part of the package. 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.