I asked this on her blog: As a programmer who's always looking for new projects, this made me curious. What is a piece of software that would make your life a

I asked this on her blog: As a programmer who's always looking for new projects, this made me curious. What is a piece of software that would make your life as a used book store owner easier? What is a piece of software that would help your customers? Please give me some ideas if you have any :)