I work for an organization that sends employees to many different countries. Employees often take digital photographs of our clients to share with their traveling group and other employees when they get back to the US.

What I am Looking For:
I need an online image library system with a single account login that allows multiple users to batch upload pics into one library so other people can access and view them. A free service would be ideal. Basically, I am looking for a pic library that allows multiple users to use one account.

Does anyone know of an online image storage service that can deliver this? I have looked at Google Picasa and Flickr and they don't seem to have what I am looking for (They both don't allow multiple users to share one account). Thanks!