It is difficult to arrive at a direct correlation between time spent on social networking and productivity. What are the precautions taken to exclude influencing factors as extraneous causes; familial influences; physical condition of the individual; individual's own basal metabolic rate; stress factors etc., etc. At best, it can point to a relation between social networking on net in office and work performance - positive or negative; significant or insignificant; good or bad; requires in depth studies considering several key influencing factors.