Steve's blog about RMPrepUSB, Easy2Boot and USB booting and sometimes other stuff too!
Visit www.rmprepusb.com for over 140 Tutorials on USB booting or www.easy2boot.xyz for a unique USB multiboot solution.
v2.1.647 has a slightly modified filesystem tweak. This improves file access time for small files by about 10% when formatted as FAT32 or NTFS. See reboot.pro thread for more details. This makes file copying to your USB drive even faster!