The tradition of Google April Fools Jokes goes back to 2000 when Google announced its new MentalPlex technology, that would read a searcher's brainwaves eliminating the need to type in a search request. The pranks are generally fantastic applications, based on real capabilities but mocking Google's own reputation for being all powerful.

On April Fools Day 2009, the artificial intelligence program "CADIE" took over Google with her vast knowledge of everything. The Cadie prank was complete with a early-Internet style website which featured old-style computer graphics.

The 2010 Google April Fool's prank has yet to be revealed but is expected to catch the user's attention and get quite a few laughs. Check back on April Fool's day to get all the details behind Google's latest prank.

On April 1, 2009, Google users were introduced to "CADIE," an artificial intelligence service with a "mind of her own," using a panda avatar. CADIE was "born" on March 31, 2009, at 11:59 p.m. She was foolproof and incapable of error. CADIE took over all aspect of Google providing "help" to users. CADIE also provided a "Gmail autopilot" service that would sent automated emails for people too busy to write their own.Telegraph: Google April Fools Pranks Trick Web Users (April 1, 2009)

The first Google hoax of the 2009 season was Australia's gBall. This app invented a new rugby-style football that can be plugged into a laptop to record a footballer's progress and help with training issues. The ball records trajectory, accuracy and distance using an algorithm called DENNIS (Dimensional, Elastic, Non-Linear, Network-Neutral, Inertial Sequencing) and it will vibrate if there's an agent trying to get hold of you.Google Australia: gBall

Google's April Fools hoaxes have always been targeted to towards people's intellectual sense of humor. They're generally parodies of existing technology and products and close enough to the actual technology being parodied to make people take a second, and sometimes third, look at the page.

Iin 2008, Google staged 15 separated April Fools hoaxes. The company enlisted the help of Virgin Atlantic founder Richard Branson to create video clips and joint press releases about “Virgle” and plans to establish a permanent human settlement on Mars.