I didn't have any files named like that (!) so I tested it against the results of Swimsuit issue, and it did the job quite nicely.

It needs some tidying up. The mkdir calls require a mask on unix type systems. A check of the OS at runtime could fill that in and make it more portable.

It's a bit too verbose. My general feel is that output should be minimal for a script whos job is not the output (in this case the job is to move some files around). Then problems are then easily seen in the program output, rather than being lost in the other information.