Surrogate Grandparents?

Would you be interested in being a 'surrogate' grandparent?
Now this subject has been raised before, but I have had a call today raising it again, and I would really like to hear your views.
If there are children who have no relationship with their grandparents, because of distance or just grandparents not wanting to be involved, how would you feel about befriending a family?
I have my own thought on this, but it is not my view, but yours.
Jane
www.bristolgrandparentssupportgroup.co.uk