Over the past year, a team of as many as 260 contract workers in Hyderabad, India has ploughed through millions of Facebook photos, status updates and other content posted since 2014.
The workers categorize items according to five "dimensions," as Facebook calls them.
These include the subject of the post – is it food, for example, or a selfie or an animal? What is the occasion – an everyday activity or major life event? And what is the author's intention – to plan an event, to inspire, to make a joke?
The work is aimed at understanding how the types of things users post on its services are changing, Facebook said. That can help the company develop new features, potentially increasing usage and ad revenue.