In our 25-criteria evaluation of marketing measurement and optimization solutions, we identified the 10 most significant providers —Analytic Partners, AOL Convertro, Google, Ipsos MMA, IRI, Marketing Evolution, Neustar MarketShare, Ninah Consulting, ThinkVine, and Visual IQ — and researched, analyzed, and scored their capabilities. This report shows how each provider measures up and helps B2C marketing professionals make the right choice for their firms.