Google has launched a new Web Indexing System called Caffeine. Caffeine provides 50 percent fresher results for web searches than google's last index, and it's the largest collection of web content. Whether it's a news story, a blog or a forum post, you can now find links to relevant content much sooner after it is published than was possible ever before.

With Caffeine, google analyze the web in small portions and update our search index on a continuous basis, globally. As they find new pages, or new information on existing pages, google can add these straight to the index. That means you can find fresher information than ever before—no matter when or where it was published.

To read the complete article, visit: http://googleblog.blogspot.com/2010/06/our-new-search-index-caffeine.html