The number of people on social networks grew by 8% in the US in the past year (metro China 18%; Europe 11%) according to a new report today from Forrester Research. But there was no growth in the number of people creating content on social networks. Instead, people on social networks read and (increasingly) watch other people’s content, according to a report yesterday from Allot Communications: “…video streaming applications continue to dominate the global mobile bandwidth scene and remain the largest consumer of bandwidth with a 35% share.  In addition, video streaming is the single largest growing application type with a 92% increase, due in part to the ever-rising popularity of YouTube.”