The average Facebook user is now using 4.15 social networks, compared with 2.56 in 2012.
The data comes from a survey conducted by GlobalWebIndex of Internet users ages 16-64.
Interestingly, younger respondents are not on the most social networks. The survey found people ages 25-34 are tops, with membership on 6.40 networks and regular use of 3.36.
Check out the full report here.