Ecomonkey incentivises greener shopping. They rate tens of thousands of products from hundreds of retailers on a simple green/ethical scale. A simple traffic light rating scheme is used to filter out the best (green) from the good (orange), from the worst (red). These ratings are based on independent certification schemes (e.g. EU energy label), and published corporate responsibility rankings. When you buy greener you basically get more green points (assuming commissions being equal). What's cool is that smaller companies can compete effectively with bigger ones as their marketing costs (and commissions) are generally higher. Also neat is the fact that they can take a middle of the road retailer (ethically speaking that is) and incentive at a higher rate their greener products (even if they don't recognize this niche). Likewise they can take a brand with a poor reputation, but encourage people to buy their more energy efficient products. Their filtering tools mean that the green stuff automatically rises to the top, so the user can focus on what they want to buy rather than agonize over how many green angels are dancing on the pin head. To kick off with you can collect green points and redeem them at a low threshold (£10) for iTunes, Amazon vouchers, donations to charity, carbon offsets.