Yagoogle, a two pane search engine. A9 gives several panels of images + various DB’s all on one page.
Google Online Pagerank Calculator (You can also install the PRGooglebar, a toolbar that lets you view your Google Pagerank. Very intrusive, but handy).
Basic Steps for making your site search-friendly. This comes from a SEO Wiki. For SEO news, there is
John Battelle’s Search Weblog and Search Engine Watch Forums.
As yahoo gains its ascendancy and content created by Asia, it is getting even more important to optimize.