Best Earth Friendly Online Store
Greenfeet.com
From my limited experience, it seems to me that Greenfeet.com is one of the best earth friendly online stores. The prices are low, there is a wide variety of products, shipping is prompt, and customer service is friendly.
My favorite product is the BioBag Waste Bags. They are 100% compostable and biodegradable kitchen trash bags made from corn starch. I think they are amazing.