I was at an ad agency a while back and there was a big project deadline looming. The folks who were printing this particular ad were about 150 miles away and had to get all of the files that the agency had put together in a hurry. We found out the hard way, after trial and error, that the print house didn’t have any Internet access at all, so we couldn’t email the data. So I suggested that we meet half way, and I’d give them the files on a zip disk. I asked the woman on the phone if she had a zip. She replied with a five digit number.