Is it recommended to use Self Tracking Entities with WCF services?

It depends who you ask. If you ask MS they will tell you Yes because they simply don't have anything better to offer. STEs were response to this very old MS Connect suggestion .

The problem is that EF itself has terrible bad support for merging changes between two entity graphs (you must do it completely yourselves) and developers working on MS platform (sometimes including me) share some common behaviors.

I would avoid self tracking entities in general - I blogged about it here.

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.