With Google Caffeine, you need to update more often

Today, Google announced the launch of Caffeine, a new web indexing system. To quote from the information received,
"With Caffeine, we analyze the web in small portions and update our search index on a continuous basis, globally. As we find new pages, or new information on existing pages, we 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 see how Caffeine looks, here is the Google diagram.

To maximise your Page Ranking and to ensure your Website, Blog, Forum posts are found, you must update often. For more information please visit the Google Blog at http://googlewebmastercentral.blogspot.com/