Can someone explain the difference between the two programs? I'm thinking AdWorks is some Phorm / NebuAd style of deep packet inspection... or is that the firs

Can someone explain the difference between the two programs? I'm thinking AdWorks is some Phorm / NebuAd style of deep packet inspection... or is that the first program? I'm having difficulty finding information on how each program collects its data along with what data is collected.