TechCrunch: Facebook users have reported seeing a new feature called Local Market appearing briefly in the social network’s iPhone app. The feature, which is only in testing but not broadly distributed, is a more structured marketplace aimed at buyers and sellers, allowing Facebook users to browse through or post items to sell across a variety of product categories like autos, appliances, furniture, clothing, household, kids, books and more. For those who dug in further, they found a section included both a “buy” and “sell” interface.