More than 250 million people use Facebook — EVERY DAY
Facebook has about 500 million members, but how many actually use the site? And use it on a regular basis? According to Facebook CEO Mark Zuckerberg, more than half of those 500 million users log on every day. That number, he said, is growing thanks to mobile. Zuckerberg made these remarks at the Web 2.0 Summit, according to Mashable .