Several days ago we wrote about the Amazitter app. The iPhone application lets you browse Amazon products and then post them directly to Twitter from your mobile, while including your Amazon affiliate ID. So, if someone from Twitter clicked on your link and bought the product, you get paid.
This is welcome news to Associates and, of course, to Amazon. Maybe not so much for the Amazitter developers. They do still have a leg up on the mobile part of it all - it's incredibly fast and easy to use the app. Now we'll see if Amazon works on an Associates app of their own.