This Saturday at 8:30PM is Earth Hour, so my lights, consoles and computers will be staying off. It's a very small sacrifice. When it comes to the scale of anthropogenic climate change I think this must have a rather small direct effect in the scheme of things. But it is also a valuable symbol, and I consider that important. It's unfortunate that raising awareness remains such an important part of this issue.
The power use involved in gaming is something I think about fairly often. The number of consoles and gadgets I use has increased over time. Recently I've started turning non-essential things off at the wall when I'm not using them, but I still wonder about the impact of spending so much time on electronic entertainment.
There are far worse things I could be doing -- I don't own a car, and it's extremely unusual for me to utilise air travel. But that doesn't mean my own habits are not worth thinking about.