David choe facebook 2012 02 03

Television cameramen walk away from a sign standing in front of the Facebook headquarters on February 1, 2012 in Menlo Park, California. Facebook is expected to file for its first initial public offering, seeking to raise at least $5 billion. Graffiti artist David Choe, who painted murals on Facebook office walls in 2005 in exchange for shares, could rake in $200 million.