- Facebook Grew Marketplace to 1 Billion Users. Now Scammers Are Using It to Target People Around the World. — ProPublica identified thousands of Marketplace listings and profiles that broke the company’s rules, revealing how Facebook failed to safeguard users. https://www.propublica.org/article/facebook-grew-marketplace-to-1-billion-users-now-scammers-are-using-it-to-target-people-around-the-world#1125670 5 comments technology