GRUB4USB
GRAND UNIFIED BOOT LOADER FOR USB
... was difficult to install for average users.
GRUB4USB was developed to automate the installation of the correct 446 bytes to the boot sector, providing Windows Users with a bootable USB Flash Drive which could contain any flavor of Linux (or other OS).
IDIOT PROOF:
GRUB4USB is "AUTOMATIC AND HANDS FREE". Simply insert USB Flash Drives, they're detected, the boot record is installed with a Linux distribution to quickly create functional, bootable USB Flash Drives; aka LIVE USB.