Thanks Aaron - We'll document the process, the wrinkle in this instance is that they want to show multiple different folders from a handful of locations in use.  It should not be a lot different than showing one, however.

Continuing in this exploration - DropBox is moving away from Public Folders, but their Shared Folders fill a similar purpose.  These are folders you create, and then invite specific people to share via their E-Mail Address.  Once they confirm, each party can add or remove files from the shared folder. For cases where you need to collect files from a lot of different places, this is a great (and no cost) solution, especially when teamed up with Import Agent.