It may help to remember that just as you are not accountable to your ex, nor is he accountable to you in regard to your children.
Not telling the address of where the children are staying is unnecessarily nasty to the other parent. Providing an address and contact details is not about displaying a sense of accountability to the ex as a person, but it is about respect for her as their mother.
I have been in this situation OP and I refused to send them. He hasn't bothered calling or trying to see them in two years now. Best thing that ever happened.
I would think there are deeper reasons for this pettiness. Does he really want to be a parent to them?
Edited by peach*face, 11 December 2012 - 11:01 AM.