I guess the main difference, is that on the client side, the connection is made between the client and facebook. On the server side, it's between your server and facebook. So the load of your server can get high if you do everything on the server side.
I just want to point out that the JavaScript alternative you show is deprecated and no longer works, the docs link (http://developers.facebook.com/docs/reference/javascript/FB.getSession/) redirects to the new getAuthSession() function for handling OAuth2.
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.