You might want to consider that that photo of Mark made every mainstream media and consider how older people who buy stocks might think of investing in facebook if they are turned off by what, to them, will seem like immaturity. There is a reason that company management of many widely held companies appears all serious and well groomed. Have you ever seen a General Electric annual report?

Yet somehow these older people are too stupid to interpret the fact that he's built Facebook? What aspect of finance relies on the sartorial choices of a company's executives?