For the record, I never had any problem with their product. I understand that by the end they were giving shoddy service, but that doesn't mean the concept wasn't valid.
In fact, when I checked the link Chris posted at the beginning that was one thing I was looking for, whether I could send them a roll of exposed film and get back a strip of negatives as well as a strip of positives.
Who would offer that with such short strips? And how would they expect you to deliver it? In respooled Tri-X canisters? Or just extract it yourself and send them the exposed strip?