Most social networks have limits in place for the number of individuals you'll be able to "Close friend" or "follow". For example, Google+ at present provides a limit of five,000 men and women you may have with your circles, and you've got a limit of 5,000 "friends" on Facebook. https://financefeeds.com/korea-blockchain-week-announces-its-speakers-list-including-former-mt-gox-ceo-mark-karpeles/