ReadWriteWeb

A few weeks ago, Google announced the beta launch of Caffeine, the company's next-generation search infrastructure. At that time, Google said that most of the changes in this update were under the hood and that users wouldn't notice a difference in search results. At its core, Caffeine is basically a major overhaul of the Google File System. There have been some discussions about whether this update will bring any other major changes to page rankings or the importance of certain categories in the search results. Summit Media, a UK-based digital marketing agency, compared search results for 9,000 keywords (PDF) in Caffeine and Google's default ('vanilla') search and, interestingly, didn't find any major differences between the two.