Well, first of all I would sieze controll of all social networking sites and search engines and build a huge server to tabulate all of the meta data. We would then use these vary detailed statistics to create complex models of human behviour on both a broad and narrow scale. We would then use these models to objectively inform best prectices regarding governent policy, with the desired outcome being an overall high standard of living.
As the system became more fine tuned we would implement an incentive system which would enact localized micro policies wich would be announced publicly and over social media. So, for example, maybe there is a flood, so everyone within the vacinity is awarded credits for every sand bag they move to a given spot. Or maybe two people who don't like each other are likely to cross paths and get into a fight, so the system awards one of them a free movie pass to divert him.
Yes, we would live in a perfect utopia, where an omnecient super intelligence manipulates our every action. What could possibly go wrong?