Google Caffeine is the name for the new method that Google uses to index web pages.
In contrast to Google’s old method, Caffeine can index new web pages faster.
Google changed they way in which they index the web because they want to show new pages more quickly in the search results.
What is the difference between the old system and Google Caffeine?
Google’s previous system updated the search index in batches.
With Google Caffeine, Google’s search index is updated continually:
That means that new pages will be displayed in Google’s search results sooner if they are relevant to the search query.
What do you have to change on your web pages?….
Full Post: http://seo-genie.blogspot.com/2010/06/google-caffeine.html