Facebook sits on the titleAccording to the survey, facebook sat on the title with 1. 110 billion users. Fifty-one per cent of internet users visit the site at least once a month。In addition, emarketer believes that this proportion will continue to increase and expects that 60 per cent of internet users will have access to the website at least once a month by the end of 2013。Global web index, however, is not an official statistic tha