At Facebook's F8 conference today, Mark Zuckerberg revealed that the network is passed an important milestone last week—500 million people used Facebook in a given day.

Facebook has publicly said that it has more than 750 million active users. But interestingly, the company has also revealed in the past that 50% of its active users log on to Facebook in any given day. While Facebook probably doesn't have 1 billion active users right now, it's more likely that more of the site's users are loggi [...]

Read More: Zuckerberg: On Peak Days, 500 Million People Are On Facebook