by Brittany Darwell, Inside Facebook « FBX came out of beta in September, but for now, advertisers have to work with a third party to run these type of ads. They are not available from Facebook’s self-serve or Power Editor tools. However, there are more than a dozen companies that offer software or managed services for FBX campaigns. We’ve provided a rundown of 15 of them after the jump. » Read the full article on InsideFacebook.com.