Yahoo's ability to save and index pages has similarities to LookSmart's Furl. Furl lets you archive any web page, so you can recall and share web content. It's similar to bookmarking, except that Furl saves a copy of the web page, so you can revisit the page and see what it looked like when you saved it.
Furl is an interesting mix of bookmarking, search and blogging, and makes it easy to keep track of information sources. Yahoo!'s approach, however, may be better suited to serving up targeted paid links.
Google is expanding its book search program, Google Print. It includes the contents of print books in your search results. Amazon has been using similar technology at its site and its A9 search engine. Whenever a book has content that matches your search terms, Google will show links to that book in the results. Clicking on the link lets you view the page of the book that contains your search phrase.
Google will scan include books for free. Books need to have an ISBN number and be in English. As an incentive for publishers, Google offers a share of ad revenues. Publishers sign up for the program and send Google their books. Google scans and indexes the books. Google shows contextual ads with the search results, and gives a cut to the publishers.
Each of these new approaches is unique, and offers the potential to significantly improve search results. The changes in search technology are certain to provide opportunities, and challenges, for ebusinesses.