If they're basing it on traffic, they have no clue that people are leaving. These same numbers could just mean their growth rate is slowing (which is way more

If they're basing it on traffic, they have no clue that people are leaving. These same numbers could just mean their growth rate is slowing (which is way more plausible, as they have over a billion users at this point). The only way to get an indication that people are _leaving_ Facebook is to look at how many users they had last month, and how many they have today. I'm guessing they have a few million more users today than they did in March...