Subject Directory

I decided to use the subject directory Digital Librarian, and found it to be a somewhat irritating resource. Why is there a search bar at the top that shoots me directly over to Amazon? There are obviously many good resources that Margaret Anderson has found and cataloged. Why doesn't she provide a search tool that searches the directory that she has created? Doesn't that defeat the purpose of an internet based subject directory? Part of the usefulness of digital media is the ability to search without having to thumb through material letter by letter. I would like to use this directory, but she needs to find someone to code an internal search engine into the site. I know some high school kid could do it. She could probably find some widget on the internet that she could grab the code to and paste it into her site. I think many people would find her site more interesting and useful if she did this.