Off here!
i got to bed at 2, so it does stay alot up at nihgt, but it get to sleep in in the morning
i dont think its really great to have it open, waste of electricity for nothing. and like us, they need a night's sleep
Mines on overnight.
Normally because boot up is over a minute (Alright, one drag with Linux but it's faster for me when it's loaded than Windows). I know thats lazy but I often download things and whatnot.