Facebook hits an astonishing two BILLION users worldwide as Mark Zuckerberg lays out vision for future

Facebook is unstoppable. The social network has officially recorded two billion users across the world.

Mark Zuckerberg's big blue social network has become the biggest communication tool in human history and shows no signs of slowing down .

"We're making progress connecting the world, and now let's bring the world closer together," the 33-year-old billionaire posted on his own Facebook profile today.