While it's true that the devices need to be on to do the recording, I imagine there's also a lot of time when they're idle.
My DVR (Sky+ HD) will go into Standby at 01:00 if it's not in use, and that seems like a sensible option.. most of what I record is broadcast during the regular evening slots, between 19:00 and midnight. Of course, that may not be the case for everyone.
Would I prefer it to go into a Deep Sleep rather than Standby? No, because it's startup times are really frustratingly long.
I guess part of the problem in that case is that age-old problem: I am too impatient to wait to use it. My desire for utter convenience outweighs my desire to save a few quid on my leccy bill.
* Can't remember whether is was an asteroid, meteor, etc. and know I'd be utter flamebait for getting it wrong in
I called Demon and asked to be put through to the head tech guy at the time (Malcolm Muer or somesuch??) who basically told me to mind my own business. I explained further that I had accidentally strayed into other peoples webspace, which he understood, but insisted this was not their problem. His explanation was, if people has removed the security from their folders, that was not Demon's lookout.
I headed to another ISP and discovered that Demon' services had been piss-poor all those years - that leased lines actually didn't drop many times per day; that DNS changes didn't have to take days to get actioned - often they never got done until a second or third attempt.
Goodbye Demon - you were once mighty, but no longer.