Visit Amazon.com and you'll find a bevy of recommendations to fill your digital shopping cart: books similar to what you've read on your Kindle or clothes and gadgets based on what else you've looked at.
Now Amazon is tinkering with ad technology that would flash ads for you even when you're not on Amazon sites. And those ads might not even direct shopper back to Amazon's sites.
It's still early days, but if Amazon's new strategy plays out, it could become the Web's next advertising giant. Sure, it already serves up … Read more