Swaptree is a unique website that allows users to trade books, textbooks, CDs, DVDs and video games with other users for free.  Members simply list the items that they are trading and the items they want, and Swaptree’s two and three-way trade algorithms instantly find all of the items that they can receive for the items that they have.

Swaptree is completely free, and users only pay for postage, which means that they can get a book, CD, DVD, or video game for around two dollars.  Swaptree even simplifies the mailing process, by providing users the ability to print a perfect postage label right from their printer, so they don’t have to weigh items, buy stamps, or even go to the post office.

For Earth Day 2009, Swaptree is working with The Nature Conservancy’s ‘Plant a Billion Trees’ initiative and will be planting a tree for every trade completed on Earth Day.  While currently several thousand trades happen every day on Swaptree, our goal on Earth Day is to do 10,000 trades and plant 10,000 trees.  While the average Swaptree user, given its emphasis on recycling and sharing, lowers their yearly carbon footprint by 180 pounds, with this initiative we hope to offset several thousand tons of CO2.

Visit www.swaptree.com

Innocent is a brand that ‘gets it’ for so long now that we at the marketing planning/strategy community almost hate them for being so good…(na…we’re just jealous we really love them so very much). Unlike so many others that jump on the greenwagon, sustainability is ‘built into’ Innocent products and brand since day one and ever since they keep leading.

And now they’ve done it again with a brilliantly simple campaign : Buy One, Get One Tree

Buy One, Get One Tree is a lovely initiative where they plant a tree for every carton of innocent smoothie you buy and there’s a virtual forest where you can see your trees and a treeometer to see how many have been planted.

There’s even a widget for your blog to show how many you’ve planted by proxy.

From an engagement (one of the hottest buzz words of recent years) marketing point of view it is just oh so smart as you actually need to register the number on the pack to plant your tree, which means that they encourage you, the customer, to actively do some goodness by logging on the website and ‘plant’ your tree.

Kudos to you Innocent!