Will Facebook gun sales ban boost more secretive sites?

- At the end of January, Mark Zuckerberg's corporation banned the sale of firearms and ammunition on its Facebook platform, the world's most-used social media site, as well as its Instagram site, the popular photo-sharing platform. The move will keep the debate over gun control in the United States raging. "Over the last two years, more and more people have been using Facebook to discover products and to buy and sell things to one another," Monika Bickert, Facebook's head of product policy, said in a statement. "We are continuing to develop, test and launch new products to make this experience even better for people and are updating our regulated goods policies to reflect this evolution,"...