Mobile app Draw Something has been downloaded more than 20m times in 5 weeks

"Three weeks ago, we wrote about OMGPOP's mobile app, Draw Something. The ten-day-old social game had been downloaded more than 1.2 million times.
Now the company has shared even more staggering numbers with us.  In just five weeks, the pictionary-like game has been downloaded 20 million times.
That's more users than 3-year-old Foursquare has. That's almost as many users as 1.5-year-old Instagram.
Draw Something is one of the fastest growing mobile apps of all time.
CEO Dan Porter tells us the game is generating 6-figures per day. His company has generated more revenue from the game in five weeks than the entire company generated last year. He hasn't spent a dime on marketing since the app's first week."

Source:  Business Insider, 12th March 2012