The Virtual Edge Institute recently published the survey results on hybrid events landscape, from over 1800 Meeting Professionals.
The article is available here: http://www.virtualedgeinstitute.com/2012/09/the-hybrid-events-landscape-survey-results-from-over-1800-meeting-professionals/
Sonic Foundry and Meeting Professionals International (MPI) Foundation conducted research to establish how hybrid meetings are helping meeting planners to expand the reach of their events and drive business results. The research team conducted nearly 40 interviews and a quantitative survey which was completed by 1800 participants. These participants included meeting professionals, event delegates, technology vendors and consultants.