Description:Zynga hopes to translate its success in Farmville to Wall Street. The company plans to sell 100 million shares for as much as $1 billion in an initial public offering this week. Many investors are eager to own a piece of the company, known for Farmville and Mafia Wars, because unlike many game makers, it earns a profit. Zynga makes money by selling virtual items to its more than 260 million active users. Lance Ulanoff, Editor in Chief of Mashable, says that business model is sustainable.(1:57)