Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
yes, they work fine on macs.

I have the 128mb sandisk that is on the page you linked.

It mounts perfectly when I plug it in. It also works on a linux machine that I have.
 
If you format it as FAT32 you can read/write to it on Mac, Windows, and Linux. On any modern OS you won't even need drivers--I've had mine work in OS 9.1, X, XP, 2000, Mandrake, Knoppix, and SUSE with no configuration.
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.