Here is an astonishingly brilliant, yet simple idea (if I may say so myself!): Why just measure conversions as one purchase or conversions just as a submission of a lead or opening of an account on facebook / twitter / what ever? Why not measure Visitor behavior after that first purchase / lead / membership sign up (or the first super poke)? Why obsess about the “quickie” that is opening an account? Why not the Visitor behavior in the 30 days after sign up? For your Search campaigns. Or your Display ads. Or Affiliate programs? If you do that, you…