This is a very clever idea that has created a new market out of something that became a waste product. I believe the concept works very well and the advertising campaign that they used worked well. It clearly stated what they were about and made it very simple for the consumer to accept and conform to it. The website followed the same principles of simplicity. I have sent phones to Envirofone and received a substantial amount for an item that I regarded as useless. The simplicity of finding out how much the mobiles were worth and the stages that were necessary to receive money made the decision easy to send phones and reap the rewards. Other companies have followed envirofones concept, but I feel that this company have successfully achieved and filled the niche.