Two major “must reads” were published in 2010, both by the American Association for Public Opinion Research (AAPOR), that masterfully cover the current state-of-the-art of research on research on the two major methods of concern to DDC.   The first was the “AAPOR Report on Online Panels,” Public Opinion Quarterly, Vol, 74, No. 4, Winter 2010, Reg Baker et al, Oxford Journals, pp 711-781. Nineteen top survey design experts from academia, government, and private sector organizations collaborated to produce a powerful assessment of when Opt-In online panels might best be utilized and how to judge their quality. This is a “must read” for any client funding opt-in online research, or for the research contractor that conducts opt-in online research for them.   The second was a report prepared by the AAPOR Cell Phone Task Force, 2010. This 136 page report summarizes the current state-of-the-art in telephone sampling methods and provides “some new insights into and recommendations for conducting survey research via cell phone.” Titled, “New Considerations for Survey Researchers When Planning and Conducting RDD Telephone Surveys in the U.S. With Respondents Reached Via Cell Phone Numbers,” the report was authored by Paul J. Lavrakas, Task Force Chair, and 20 top researchers from some of the nation’s most prestigious academic, government, and private sector survey organizations. Again, this is a “must read” publication for anyone funding or conducting telephone surveys of the general public.