[Grml] grml2hd on a usb stick - wear level issues

[Peter]

Hi
I would like to install grml to a usb stick. (not as a live cd but as a 
hard disk install). Since this is flush memory, with limited write 
cycles, I wonder if I have to take special with some files or 
directories that might perform to a high number of write access. For 
example, I can not create a swap partition since this will rapidly ruin 
the stick.
My question is: are there other files (for examples in the /dev /tmp 
/var dirs) that are written very frequently and that should be mapped 
for example to a tmpfs or ramdisk ?

Thanks for your help
Peter