Amazon wants to make it easier for its millions of customers to donate to charitable causes. To assist with that effort, the online retailer has today launched AmazonSmile, a new shopping portal that allows users to automatically direct 0.5 percent from the purchase price of any eligible item towards a charity of their choosing. Using the new feature is fairly straightforward, but instead of visiting Amazons regular homepage, youll need to navigate to http://smile.amazon.com. From there, you can choose from millions of charity organizations — with Amazon highlighting a few popular choices like the American Red Cross and St. Jude Childrens Research Hospital.