Using quasi-random variation from Facebook's entry to college campuses, I exploit a natural experiment to estimate the effect of online social network access on future earnings. I estimate that access to Facebook for an additional year in college causes a .62 percentile increase in a cohort's average earnings, translating to an average wage increase of around $970 in 2014, and decreases income inequality within a cohort. I provide indirect evidence that wage increases come through the channel of increased social ties between college alumni, strengthened employment networks, and increased match value between students' majors and later occupations.
Armona, Luis. "Online Social Network Effects in Labor Markets: Evidence from Facebook's Entry to College Campuses." Review of Economics and Statistics (July 24, 2023): 1-47.