Facebook has rolled out an information portal designed to help marketers compare ad performance across digital, television and print campaigns. “The company’s new marketing mix modeling (MMM) tool will let measurement partners gather information directly from Facebook, Instagram and Facebook’s Audience Network on behalf of their clients for cross-channel measurement and planning,” reports Variety. More than 150 advertisers are already using the MMM information, and the company has been working to feed its data “to partners including Nielsen, Neustar MarketShare, Analytic Partners and Marketing Evolution.”