In our 35-criterion evaluation of marketing measurement and optimization (MMO) providers, we identified the 10 most significant ones — Analytic Partners, Ekimetrics, Gain Theory, Ipsos MMA, IRI, Kantar, Marketing Evolution, Neustar, Nielsen, and OptiMine— and researched, analyzed, and scored them. This report shows how each provider measures up and helps B2C marketing professionals select the right one for their needs.