I donate to them regularly because I respect and appreciate what they do. I asked because I was curious about the logistics behind it and how sustainable it is (if they rely on donations versus ads or pay out of their own pocket).
Gnarly-Repacks for example says
I pocket none of this, as every donation sent will only be used for hosting costs so this site stays up to keep providing you with quality releases.
on the donation page of their site and as someone who has minimal experience running a website it made me curious.