February 2, 2012; Source: The Atlantic Wire | With an estimated net worth of $500 million, Donald Graham, the chairman of the Washington Post Company, probably does not really need the $46 million windfall he got from the Facebook IPO filing yesterday. So, Graham plans to keep his shares for now but says he will donate them to three education-related charities in the D.C. area when he leaves the Facebook board, which he has been on since 2008. He and Facebook founder Mark Zuckerberg are longtime friends. The 66-year-old Graham, by the way, has 4,888 friends on Facebook. –Ruth McCambridge