From
this news story we find the value the Islamist nutjobs place on Dar al-Harb children.
"for every destroyed fighter, they will kill 50 children and for every injured fighter — 20 (children)"
I assumed that it would have been more, but they might run out of children...
UPDATE:
Spoons has a really good question...
UPDATE II: The latest news on this topic can be found at
Logic and Sanity.