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[Edit Description]
Click on bookmarklet to easily search amazon.com
You can also select a word on the page you're visiting, click the bookmarklet to search that keyword on amazon.com. Makes searching really easy.
Source (www.amazon.com)
[Edit Javascript]
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javascript%3Aq%3D%22%22+%28window.getSelection%3Fwindow.getSelection%28%29%3Adocument.getSelection%3Fdocument.getSelection%28%29%3Adocument.selection.createRange%28%29.text%29%3Bif%28%21q%29q%3Dprompt%28%22Search%20terms%3F%20...%20%22%2C%22%22%29%3Bif%28q%21%3Dnull%29%7Blocation%3D%22http%3A//www.amazon.com/exec/obidos/external-search%3Fmode%3Dblended%26tag%3Dbookmardirect-20%26keyword%3D%22+escape%28q%29.replace%28/%20/g%2C%22+%22%29%3B%7Delse%7Blocation%3D%22http%3A//www.amazon.com/exec/obidos/redirect-home/bookmardirect-20%22%3B%7Dvoid%200
amazon
I found it works best it you highlight the text you want to search.
I wish it searched a few more sites like barnsandnobles.com
