Hi there, just wondering if anyone has any ideas at to where would be best to market these t-shirts? I found that a lot of my friends were too busy or uninterested in changing their lifestyles to pursue environment-friendly causes and so I found this. This is a t-shirt company called Nextinct which promotes t-shirts with environmental awareness designs that are really original. Plus, all production is environmentally aware and carried out with an aim to reduce the carbon footprint. Check out the animation at http://www.nextinct.com and its all explained. What do you think? Would you be willing to to wear a t-shirt like this/ Where do you think would be a good place to advertise? [Planet Aware Apparel - Stop Think Nextinct]
Take a look at Project Wonderful. They provide a platform whereby you can post ads on loads of high-traffic (and not so high) different niche-specific websites.
Promote it on sites or keywords (google adwords) for people who are into living green, environmental awareness and global warming. You could even add it in your signature for forums that are in this niche too.