Every year Google like to take April 1st like any other fool, with a good, well thought out joke. Their joke this year is "Introducing CADIE - a singular upgrade to your online life". However, at the time of writing their joke doesn't actually work as the link is dead (unless that of course is the joke!).
UPDATE: Okay the link is working now! CADIE stands for Cognitive Autoheuristic Distributed-Intelligence Entity
Since then progress has been rapid, and tonight we're pleased to announce that just moments ago, the world's first Cognitive Autoheuristic Distributed-Intelligence Entity (CADIE) was switched on and began performing some initial functions. It's an exciting moment that we're determined to build upon by coming to understand more fully what CADIE's emergence might mean, for Google and for our users. So although CADIE technology will be rolled out with the caution befitting any advance of this magnitude, in the months to come users can expect to notice her influence on various google.com properties. Earlier today, for instance, CADIE deduced from a quick scan of the visual segment of the social web a set of online design principles from which she derived this intriguing homepage.
Not as fun as their previous April Fools jokes.
