The first time I really looked at Windows Vista was at the 2005 PDC in Los Angeles. I remember learning about this cool feature that allows you to use a USB key as virtual memory to enhance performance.
Unfortunately, I only have a pathetic 128MB USB key so now that I have Vista, I've never felt the need to actually use Windows ReadyBoost. I've also been concerned that ReadyBoost would simply wear out the drive after a few months.
However, after reading Tom Archer's blog on ReadyBoost, I think I'll buy a 4GB USB 2.0 flash drive and give it a try. Apparently you need a USB 2.0 flash drive with at least 1:1 flash memory to system memory.