STOP THE TRAFFIK
STOP THE TRAFFIK is a growing global movement of individuals, communities and organisations fighting to PREVENT the sale of people, PROTECT the trafficked and PROSECUTE the traffickers. For example, they do campaigns for fair trade chocolate.
Oasis Global (The global Website for Oasis)
Oasis USA
Oasis is a Christian organization working against injustice by encouraging Fair Trade etc.
Oxfam International
Oganization that works to end poverty and injustice. They also have stores in some places (I visited one in Australia) where you can buy fairly traded items and get information about Oxfam.
Ten Thousand Villages
Fair Trade stores - including an online store. (There's one of their stores in my neighborhood.)
The Hunger Site - Fair Trade items
One of the categories in the Hunger Site online store is Fair Trade. With each purchase you also contribute food for people who can't afford it. The other affiliated sites have a Fair Trade section as well, in case you prefer to contribute to something else, such as Animal Rescue.