The top 6 social networks by number of active users as of December 2013. This covers both the number of active users as well as the year each social network was launched, along with the corresponding age of the network. I reveal more detail and a bit of insight about what the numbers mean and how important they are as well as a few other pieces of info here: http://dustn.tv/active-users-2013 Facebook remains the number one largest network with 1.19 Billion active users. Following in second place is Google+ with 540 Million active users. Surprisingly LinkedIn beats out Twitter for the third spot with 259 Million active users. Twitter is hot on it's tails with 232 Million active users. Instagram comes in fifth with 150 Million active users. And in sixth place is Pinterest with 70 Million active users. Stats are all based on monthly activity.