Not really.
I dont use seti, ud, or others ... never liked those things.
I dont "download the internet" like alot of people do. I usually just borrow their hard drive, less hassle (and get all the goodies too).
I dont keep it on just "because"...
Only on when actually doing something.
Still, it's on most of the days. But not 24/7.
Besides. No "waste" of electricity.