No, ade is certainly not necessary, since they state the devices they support, and samsung isn't listed...
I just mentioned it because when I visit sites that suggest the files I can buy are in epub, they turn out not to be readable on the samsung device. All the files that I have uploaded successfully are from project g...not bad, just not the most recent reads! Ah well, I best learn to master Korean and use the Kyobo store then
Perhaps I am the lone purchaser of the device on MobileRead?!!!