In case you've forgotten just how big a social media monolith Facebook is, on Monday approximately one-seventh of the world's population logged in to Facebook.
Facebook celebrated the "1 billion users" milestone in traditional Silicon Valley fashion: an inspirational post from CEO Mark Zuckerberg, along with a mashup of photogenic user moments set to acoustic guitar music.
The milestone doesn't mean 1 billion people are visiting the site every day — yet. But it does highlight Facebook's constantly impressive growth and is another reminder the site isn't showing any signs of slowing down.
Facebook's made a concerted effort to keep its user base strong by breaking into emerging Internet markets early. That principle is what's driving Zuckerberg's Internet.org project, which offers a slimmed-down version of the Internet to developing countries.
And the push seems to be working out well. As Quartz reported in February, Facebook users in some countries had no idea they were connected to the broader Internet. For them, there was only Facebook.
This video includes images from Getty Images.