Zuckerberg: one in seven people on the planet used Facebook on Monday

Social network hit 1bn user milestone on Monday, but Mark Zuckerberg maintains it is still 'just the beginning of connecting the whole world'

As the fictional Sean Parker might put it: 'A million people logging in to Facebook on a single day isn't cool. You know what's cool? A billion people'.

The non-fictional Mark Zuckerberg has announced a new milestone for the social network: one billion daily users.