Sign up if you want to participate! It sounds pretty cool: (The following is directly from their site)
Sign up to join the 2012 Sketchbook Project. Each participant receives a blank sketchbook that will be exhibited on the 2012 tour and cataloged permanently in the Brooklyn Art Library. To begin, choose a theme below! Select a Theme
Digitize +$20: Your completed sketchbook will be professionally scanned and uploaded to the official Sketchbook Project virtual archive. Visitors from anywhere around the world will be able to explore your work online.