(Google) Doodlers brighten Google's plain home page with colorful illustrations -- all of them variations on the word "Google" -- for holidays and special events such as the Vancouver Winter Olympics. Employees from all over Google contribute ideas for doodles.
The Story Behind Google's Doodles
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MARCH 01, 2010
Amy Zerba, CNN

There's no set number on how many doodles Google does in a year, although the creations are appearing on its site more often. (Click here for a Google doodle history.) However, there is one rule for how a doodle should look: It must incorporate some form of the word "Google."
Read the full story: www.cnn.com/2010/TECH/02/24