If you've already connected your Twitter and Amazon accounts for adding items to your cart, you can also now add items to your wish list with a hashtag.
If you see someone tweet a cool product with an Amazon product link, just include the hashtag #AmazonWishList in a reply, and the product will be added in your account. You'll also receive a reply tweet from @MyAmazon and an email informing you that the item was successfully added to your wish list. Now there's no need to throw everything into your cart — you can review your wish list and buy items as you see fit.
Amazon Customers Wish with Tweets - Introducing #AmazonWishList [Amazon Blog via Engadget]