I'm curious to know what the metric is actually measuring. Is it one billion people that hit Facebook.com or used the mobile app? Or is it also counting people that might have triggered a hit just by browsing around sites with Like buttons on them while logged in, but didn't actually use Facebook?
To some extent it doesn't matter because it's just such a massive and impressive number, but I'd be curious to know.
To some extent it doesn't matter because it's just such a massive and impressive number, but I'd be curious to know.