I don't know if it came up in the earlier discussion, but these types of people are likely to have several clients and projects going on at the same time. Rather than dump everything into a common AirDropper folder, would probably be useful organizationally if the person requesting the file could indicate a subfolder somehow, so when the client uploaded the file it would get dropped into that subfolder within the parent AirDropper folder.

Of course as soon as you implement that, people might want support for an infinite hierarchy, but I'd think one level of subfolders would cover most needs.