The plugin for the popular Wordpress blogging system allows you to easily embed Amazon product information in your blog. Once you have installed the plugin you will be able to add products simply by setting tags for your article. The plugin will use these to run a keyword search of the Amazon database and automatically output the results, making it very simple to use.

You can see an example of the output here: http://www.fionacoulter.com/blog/?p=59

You can find further information and full documentation here.