AmazonSmile is operated by Amazon with the same products, prices, and shopping features as 

Amazon.com. The difference is that when you shop on AmazonSmile, the AmazonSmile Foundation will donate 0.5% of the purchase price of eligible products to the charitable organization of your choice.

King Soopers Community Rewards donates to local non-profit organizations based on the shopping you do everyday. Once you link your card, all you have to do is shop at King Soopers using your alternate ID or loyalty card.