Some time ago hate speech on facebook scared me a lot .And i felt that posts on social media could inflame the offline population via rumours. Now there is proof from india that there is indeed a thriving black hat social media industry. I always felt there was many blackhats on facebook by the insane numbers of likes on pages and how social media companies fooled traditional companies into believing likes converted into sales or potential sales
Video on youtube
http://www.youtube.com/watch?v=BGqwf5eFfiY