Earlier this week, Zuckerberg defended the site from accusations that it was cavalier with users' data, but admitted that "sometimes we move too fast – and after listening to recent concerns, we're responding".
In recent months, Facebook has been condemned by the media and online communities for its use of personal data – there were even accusations that Facebook had been sharing personal data with advertisers. Zuckerberg vociferously denied this.
He said: "Advertisers may target ads to people according to certain demographics, but they receive only anonymous data reports. We don't share your personal information with our advertisers."