Great gamification presentation at #ISUM12 by Craig Ferrara (@Craig_Ferrara). This infographic from his company site http://blog.gigya.com/ discusses the value of social login and social plugins (likes, shares). I see social plugins as key to gamification since they provide real time feedback loops visitors or "players" on your website see and are influenced by. This infographic proves the impact of social login and shares. Login removes signup friction and shares creates and reinforces tribes.