If there’s one question on which much of Facebook’s $60-billion market valuation hangs, it is whether the kind of “social advertising” the giant network offers to brands actually works or not — in other words, whether having fans and social discussion around a product translates into actual measurable sales. Facebook has now released some actual data from comScore that it says proves the value of building up a fan base on its platform, since doing so appears to increase the likelihood that a user will buy something later. But will the research convince advertisers to devote more time and money to Facebook’s social campaigns? And if so, how much of that will benefit Facebook directly? Read full article at here