<p>SAN FRANCISCO (Reuters) - Facebook Inc and its photo sharing subsidiary, Instagram, will delete posts offering to buy or sell guns without background checks, Facebook announced on Wednesday.</p><p>In an effort to curb what gun control advocates say is the increasing use of the social networks to circumvent checks and controls on firearms sales, Facebook and Instagram will also bar users under 18 from viewing gun offers posted by individuals or groups.</p><p>"We will not permit people to post offers to sell regulated items that indicate a willingness to evade or help others evade the law," Facebook said.</p><p>The move by the world's largest social network and Instagram may add fuel to an already intense debate over U.S. gun rights, following a series of mass shootings across the country.</p><p><a href="http://news.yahoo.com/facebook-instagram-crack-down-gun-sales-social-networks-172943836--sector.html">Keep reading...</a></p><p>Read also:</p><p><a href="http://www.theguardian.com/world/2014/mar/06/facebook-takes-heat-for-gun-advertising-changes">Facebook takes heat for gun advertising changes</a> (The Guardian)</p><p><a href="http://bits.blogs.nytimes.com/2014/03/06/facebooks-gun-sale-changes-could-be-hard-to-enforce-around-the-world/">Facebook&#039;s Gun Sale Changes Could Be Hard to Enforce Around the World</a> (New York Times (blog))</p><p><a href="http://venturebeat.com/2014/03/06/dylans-desk-facebook-takes-aim-at-gun-sales-but-it-misses-the-mark/">Dylan&#039;s Desk: Facebook takes aim at gun sales, but it misses the mark</a> (VentureBeat)</p><p>Explore: <a href="http://news.google.com/news/more?ncl=d3NqY5Y6u7dQnxMZOm38bm8t6PdhM&authuser=0&ned=us">94 additional articles.</a></p>