Weibo is a leading social media for people to create, share and discover content online. Weibo combines the means of public self-expression in real time with a powerful platform for social interaction, content aggregation and content distribution. Any user can create and post a feed and attach multi-media and long-form content. User relationships on Weibo may be asymmetric; any user can follow any other user and add comments to a feed while reposting. This simple, asymmetric and distributed nature of Weibo allows an original feed to become a live viral conversation stream.