Joel’s writeup on how they made an ad-hoc logistics system. I LOVE THIS. I love hacks. “Hack” is not just something in software, although this system involves software too. Hack is when you put some stuff together ad-hoc to output more stuff in a fun, cool, efficient or innovative way. So it can involve software, but as you read in Joel’s article, in this case it also involves a bunch of services (stamp printing) and hardware (barcode scanning, printing). So it’s a genuine hack.