I use a couple of 1/2 gig thumb drives to run stuff from home to school, work, and back home again... most of the stuff is done on a mac but I do some school work such as CAD on a PC.
I found early in the present school semester that I was having problems with another thumb drive (a pny 1 gig model) losing data so I changed brands and also keep the PC stuff on a separate thumb drive from my mac produced content.
Considering you now see 2, 3, 4 gig thumb drives and the little pocket hard drives that hold even more...A couple questions come to mind...
First, how are these drives (especially the flash drives) formatted?
Can/should you format a thumb drive to erase data using your mac disk utilities and can it still be used cross platform if you do?
Does mixing files produced on separate computers but stored on one drive create problems?
grim