Facebook announced its billionth user today. That's a lot of people! It's nearly half the people with internet access, and 15% of all the people that are alive at all. More people use Facebook than own dogs, or watch the Super Bowl.
To help you further comprehend the sheer scale of giga-Facebook, here's a few other things with a billion users.
1.4 billion households have TV, per the most recent count.
We reached a billion total cars last summer.
We've sold about a billion smartphones. About a quarter of them were iPhones.
1,022,234,000 people lived in Africa as of 2009.
5. Mandarin Chinese
6. Microsoft Office
Every second, someone buys a copy of MS Office 2010.
Every day, a billion people eat chocolate.
8. Animal Flu
Zoonautic diseases (bird flu, pig flu, etc.) have infected 2.2 billion people worldwide.
According to Oxfam, a billion people currently go hungry across the world.
One billion people are dependent on fish as a principal source of protein.
12. The Olympics
A billion people watched the London Olympics' Opening Ceremony.
The World Health Organization counts a billion smokers.
Roughly 100 billion people have died over the course of human history. Facebook isn't there yet, but they're on their way.