Being green not only improves the environment, but helps you build links, gain exposure and build a positive reputation. Ann Smarty suggests adding your company to green directories and promoting eco-friendly news related to your business. She provides you with a list of sites to help get started.
One site, in particular, Green Company Directory, doesn't require "either reciprocal link or payment for the review," Smarty writes. "To qualify you must either be a supplier of green products/services, or have environmentally friendly company policies."