Some people (not me, of course) use Facebook to look up old flames from time to time. They (not me, of course) do this not because they are trying to do anything inappropriate.They (not me, of course) do this merely because they are curious about people who used to play an important role in their lives.(And to see if these old flames have gained weight/lost their jobs/are dating losers now – I imagine.)ANYWAY.If you are one of these people (I am not) then you should be aware of a new Facebook feature that is potentially very embarrassing.It is this: Facebook now...