Image by Robert Scoble In an effort to better serve readers with value added content, every month “Geoff’s Market Research Bulletin” will be sent to interested readers. The Bulletin encapsulates all of the new interesting market research studies over the past month that seem worth sharing in one place. Sign up today if you are interested in this free email newsletter. The below is an abbreviate version of the first newsletter sent to subscribers yesterday. Geoff’s Market Research Bulletin, September, 2011 Curated by Geoff Livingston, written by Henry T. Dunbar Social Networking Growth Slows A new study from the Pew Research Service’s Internet and American Life Project reports 65% of all American adults online are using some social networking site …