I stumbled upon this blog post - http://www.michaeleisen.org/blog/?p=358
Being a person who sometimes buys books that are used I found it to be kind of scary.
How much of Amazon's pricing is decided by algorithmic pricing? Since prices can be updated almost instantly on the Internet... would I get a different price than a friend on a different computer simply because certain criteria match? Or the cookies on my computer have indicated a certain pattern in my shopping?