Amazon.com has become one of the world's largest book sellers, and it's not at all by chance. Their multitudes of cross-sell and up-sell techniques are very intelligently woven into a 'personalized' e-commerce experience. And now that they've turned their attention and expertise to the search world, we can anticipate some very exciting personalization features, to cater our searches specifically to ourselves. What are some of these features? How will they affect the world of search? Read on to find out!