Some related posts from Technorati and Google.

 [Seobook.com] Aaron Wall's SEO Book.com: Our advanced search engine technology allows us to provide you with the latest information on potential keywords for your campaigns.Google also has tips on how to use the tool. I am not sure how well this tool interfaces with their API, but automating keyword selection based on Google's usage data and extracting meaning from page content makes the market a hell of a lot more efficient, especially for large advertisers willing to pay a bit extra for branding.

[Rankmagic.com] Internet Marketing and SEO Blog from Rank Magic: Relevance has to do with how easily the search engines can tell if your page is relevant to the terms that were searched for. That's addressed through classic search engine optimization techniques for enhancing on-page keyword relevance.

 [Webpronews.com] MSN Search Increases Relevance Focus: While the white paper is quite dense, their use of the Neural Net has already paid dividends, at least in Japanese field tests and other examples provided on the MSN Search blog. Although they do not provide in-depth details about their technology, the post does say the developers at MSN Search are obsessed about relevance and the Neural Net technology should be an indication they are committed to improving the user experience.

 [Blogs.msdn.com] MSN Search's WebLog : Working Together Against Blog Spam: ç±³Googleによれば、rel="nofollow"はブログ（のコメントやトラックバックなど）だけでなく、一般のサイト（のゲストブック、アクセスログ解析、リンクリストなど）にも利用できるとしている。 ブログサービスやツールのrel="nofollow"への対応だが、Six Apartã‚„Blogger、blosxomなどが支援に同意したとのこと。 たとえばSix Apartの製品であるMovable Typeは、米Googleの発表と歩調を合わせて、nofollow 向けプラグインを公開している。 なお、同日にYahoo! Search blogとmsnsearch's WebLogでもrel="nofollow"をサポートすると発表されたが、米Googleがリーダーシップをとったのは間違いなさそうである。 というのも、上記msnsearch's WebLogで、 Paul told me that Google is planning on announcing support for a <rel="nofollow">

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