<story><title>If you use a Mac or Android, e-commerce sites may be charging you more</title><url>http://www.washingtonpost.com/posteverything/wp/2014/11/03/if-you-use-a-mac-or-an-android-e-commerce-sites-may-be-charging-you-more/?tid=rssfeed</url></story><parent_chain></parent_chain><comment><author>bdkoepke</author><text>I use &lt;a href=&quot;http://camelcamelcamel.com&quot; rel=&quot;nofollow&quot;&gt;http:&amp;#x2F;&amp;#x2F;camelcamelcamel.com&lt;/a&gt; for amazon price tracking. Does anyone know of any other websites like this with price tracking?&lt;p&gt;For instance, Artificial intelligence a modern approach is $135 right now, but using this site I can see that it was &amp;lt;$90 in January of this year and it hit $100 in September: &lt;a href=&quot;http://camelcamelcamel.com/Artificial-Intelligence-Modern-Approach-Edition/product/0136042597?context=browse&quot; rel=&quot;nofollow&quot;&gt;http:&amp;#x2F;&amp;#x2F;camelcamelcamel.com&amp;#x2F;Artificial-Intelligence-Modern-Ap...&lt;/a&gt;&lt;p&gt;Same story with Introduction to Algorithms, except it is now $80 and the lowest it hit was $44 in October: &lt;a href=&quot;http://camelcamelcamel.com/Introduction-Algorithms-Edition-Thomas-Cormen/product/0262033844?context=browse&quot; rel=&quot;nofollow&quot;&gt;http:&amp;#x2F;&amp;#x2F;camelcamelcamel.com&amp;#x2F;Introduction-Algorithms-Edition-T...&lt;/a&gt;</text></comment>
<story><title>If you use a Mac or Android, e-commerce sites may be charging you more</title><url>http://www.washingtonpost.com/posteverything/wp/2014/11/03/if-you-use-a-mac-or-an-android-e-commerce-sites-may-be-charging-you-more/?tid=rssfeed</url></story><parent_chain></parent_chain><comment><author>justcommenting</author><text>these practices are converging on something like a 21st century version of redlining, and i hope consumer advocates will work to expose and address these modern forms of &lt;i&gt;opaque&lt;/i&gt; price discrimination.&lt;p&gt;some may claim that these practices can benefit consumers, but unless it&amp;#x27;s done transparently in ways that consumers know and understand, it primarily serves to increase information asymmetry.</text></comment>