https://www.latimes.com/business/technology/la-fi-tn-draft-post-save-20181218-story.html

Peeking at unposted messages is not new territory for many companies, including Facebook. In 2013, two workers there compiled data from 4 million users on what they called “last-minute self-censorship” — status updates, posts or comments that were written and then deleted.

About 70% of monitored users, they found, had self-censored that way over a period of about two weeks, and that rate changed based on lots of factors, including the makeup of their friend groups. But the focus of the research was all business: With too much self-censorship, they wrote, the social network “loses value from the lack of content generation.”