Although BrainKing had been formerly created as a pure game site, it also contains many features known from social networking projects - discussion boards, chat rooms, friend lists, user profiles, user pictures etc. Many of these functions are available to all registered users, but there are still some extras to be unlocked after upgrading to a higher membership level:
(hide) If you don't want other users to know what you are doing you can change into cloak mode in Settings (paying members only). (pauloaguia) (show all tips)