Google's with new Caffeine web index

Search engine Google has changed the way it indexes the web and says 'Caffeine' produces much fresher results .

The way Google searches the web changed fundamentally this morning when it announced that its index would now be based on the "Caffeine" system it first mooted in August last year.

Although the new method will not be directly visible to consumers, it means that the company now updates its entire web index constantly and incrementally, rather than trawling the web over periods of about two weeks to produce an entire new index. Tom Stocky, Google's Director of Product Management, said that it paved the way for a host of new innovative services. 

Read more: Our new search index: Caffeine.