The Boot Bot Shield lets you burn the arduino boootloader onto a blank Atmega 328 chip. The bootloader is that magic piece of software that turns a mundane chip into the open source programmable miracle known as the arduino. Blank chips cost a few dollars less per chip than bootloaded ones. With the Boot Bot you will have no need for all that pre-bootloaded extravagance. Once completed, this board will allow you to use your arduino as an ISP programmer that can burn the arduino bootloader onto your raw chips!