The New York Times reports that Facebook's newly staked-out role as a site to facilitate local, person-to-person sales (ala Craigslist) has a new wrinkle: the site has announced a site-wide policy restricting firearms sales that applies to personal sales, though not to licensed dealers or gun clubs. According to the story,The policy applies as well to private sales that occur using Facebook Messenger, though the company does not scan Messenger exchanges and must rely on user reports.