Amazon Offers Alexa Augmented Search
Adam pointed out that Amazon is offering a Web search engine A9, which uses ancillary information from Alexa. I offer vanderwal.net/random/ as your jumping off point to explore (leave a review if you wish). I am please with the related sites that are offered as similar sites, not that I am trying for anything in particular.
I agree with Adam that Amazon is offering intriguing integration of information and services, which is the position Google is working to fill. Some of the personal portal sites, like Yahoo, more so than MSN or AOL, have done a good job at innovating in this space.