TC: “Search Engines are like sharks: If they stop moving, they die. – Google, as the king of search engines, obviously has been doing that constantly throughout the years. Some of the changes are noticeable, but most are subtle tweaks on a rolling basis. – But today, the company has begun testing a new engine for its search product that’s a big enough change that it felt compelled to let the world know about it. Codenamed ‘Caffeine’, it promises to ‘push the envelope on size, indexing speed, accuracy, comprehensiveness and other dimensions.’”

Cutts: “Google recently opened up a preview of our new Caffeine update, and I wanted to give a little more background on this change.”

RWW: “From a consumer standpoint, Caffeine is identical to regular Google search save for shaving off a few precious half seconds. But for search engine marketers, the new indexing system adds another hurdle to their jobs. While it’s likely that Google will have at least a month head start in outrunning them, in the past savvy keyword specialists have always managed to make their mark. – To help improve Caffeine, search in the sandbox and click the ‘Dissatisfied? Help us improve’ link to offer feedback.“