If you use AmazonSmile to help your favorite charity, you may want to start donating directly. That’s because Amazon is ending the charity program. On Wednesday, the company sent a letter to AmazonSmile customers saying the program "has not grown to create the impact that [it] had originally hoped." Launched in 2013, AmazonSmile donated half-a-percent of the price from eligible items to a charity of the shopper's choice. Amazon says the program's ability to have an impact was spread too thin between too many charities. The letter announced Amazon plans to "wind down" AmazonSmile by the end of next month. The company promised to keep investing in areas where it "can make meaningful change."