Business WorldFacebook investors sue Mark Zuckerberg over IPOKatrina JonesJune 5, 2012June 6, 2012 by Katrina JonesJune 5, 2012June 6, 2012 New York: Disgruntled Facebook shareholders have sued Facebook owner, Mark Zuckerberg, alleging he had inside info that the stock was grossly overvalued, and he protected...