Looking for a way to be a little more "green" to the environment and also keep a little more "green" in your pocket? I have a way you can do both at the same time. Take your empty ink cartridges to office supply stores, such as Office Max or Office Depot. They will recycle or refurbish the cartridge and give you some money off of future purchases(they used to do it immediately, but I just found out they changed the way they do it). Many office supply stores now also have machines that will refill your empty cartridges for quite a bit less money than a new one.
Environmentally speaking, it can take at least 1,000 years for the plastic the cartridges are made of to decompose in our landfills. It takes about 80% less energy to remanufacture plastic than to make it new.