These are not new "dilutive" shares - the stock was always factored into the FB market cap so it's not like publicly traded shares are suddenly worth 60% less j

These are not new "dilutive" shares - the stock was always factored into the FB market cap so it's not like publicly traded shares are suddenly worth 60% less just because the float increases. But it does mean that for a while people who have been unable to sell are able to do so which is going to lead to some short term downward pressure. Once that is over Facebook will resume its normally trajectory, ummm, downward...