Information Today ran a piece I wrote about Amazon's new OpenSearch. See:
It will be very interesting to see whether this ends up changing the universe, or is just a flash in the pan. It's generating a lot of buzz amongst bloggers and tech reporters.
The gist of the matter: A9 lets the searcher pick "columns" which are nothing more than subject-specific search engines (which the search engine industry likes to call "vertical searches").
For instance, here's an A9 search for me. In this example, I've asked A9 to search the Web (powered by Google), to search Web-based images, and to search The New York Times: