"...that chart suggests that Cloud OS, cloud computing and network hosted applications together make up an extremely large component of internet traffic in comparison to plain old web surfing...mike68"
mike68, the chart shows bandwidth requirements for the relevant application, it is not a breakdown of Internet traffic.
Here is the link to graph from ZTE Corporation. http://www.commsalliance.com.au/__data/assets/pdf_file/0012/20550/ZTE_End_to_End_Design_for_Australia_NBN_06Nov09.pdf
mike68, your quite welcome to put up a graph that you believe is more accurate.