Central admin-managed contact list for iPhone
Hi Rune,

Using [ContactBox][1] a person can share a list of contacts with a group of people/devices. By default anyone the list was shared with can update the list but the list admin (the person who created the list) can prevent the other group members from editing. Any changes made to the list are synched to all group members. What is synched is a list and not an "account" and you can create as many lists as you want and share each one with a different set of people.

Hope that helps, Gal
Disclosure: I the founder of ContactBox