I tend to use computers daily and I like the environment, so I like to be as green as possible while on the ol’ computer machine. PC World has five tips for greener computing.
There’s also global shutdown day.
5. FIND A NEW HOME FOR YOUR OLD TECH
So you’re getting ready to upgrade to a new computer, but you’ve discovered that you have no room in the closet for the old one because it’s already filled with a decade’s worth of obsolete technology. What to do? One solution is to recycle your old gadgets by bringing them somewhere where they’ll be disposed of properly. You can find a list of services in your area by checking out Earth 911′s Web site, which tells you where to dispose of everything from batteries to toner cartridges to the 386 you’ve had knocking around since the first George Bush was in office.
The One Laptop Per Child (OLPC) project aims to bridge the digital divide by providing relatively inexpensive computers to kids in the developing world. The cost of the machine has unfortunately increased from their proposed $100 USD to almost double that, in oprder to ensure that they can still get these laptops out to the kids they are selling them as pairs. 
