Hello, I just saw 16GB USB flash drives on sale for £25, which isn't much. That makes me wonder if it's becoming feasible to use Time Machine to back up to a USB flash drive? Obviously you can't back up the whole system, but 16 GB would be enough to cover the documents folder of a lot of people. 64GB flash drives are out now, and that's nearly enough for a whole Macbook Air. An advantage is it would use less battery power than backing up to a 2.5'' portable drive. One issue is wearing out the write cycles of the flash drive, but they are so sturdy nowadays, and also TM doesn't cycle memory that much - only writing new stuff each hour (while plugged in) and erasing old stuff when the drive is full. Interesting? Do people already do this? A google search found nothing.