"Quantum is accredited under the Market Research Society of Australia's interviewer quality control scheme and is audited annually under this scheme. The scheme sets guidelines and standards for the conduct of interviewing to which we must adhere. All project management staff are members of the industry professional body and as such, are bound by a Code of Professional Behaviour which governs research conduct and the rights and responsibilities of researchers and respondents alike.

"Many of the queries you raise appear to be related to the absence of particular information (an industry issue) rather than the quality of the ARIA research per se. Not every question that ARIA would have liked to ask could be asked due to limitations on the length of interview." [Sydney Morning Herald] Methinks ARIA and Quantum doth protest too much. See the story link for the list of questions asked re the survey. They are perfectly reasonable and certainly germane to the conclusions drawn by the ARIA and Quantum.

Here's one example:

8. According to the figures 1.8 million Australians have illegitimately downloaded music files via file sharing services last month, and 3.5 million Australians have used these services over time. The Organisation for Economic Cooperation and Development report into broadband says there are only 300,000 broadband users in Australia, and not all of them download music. If say (conservatively) half the broadband users download music, your totals suggest the other 3.35 million downloaders use dial up services. According to your analysis, that means that some 96 percent of downloaders use dial-up services to download music. How do you reconcile this figure with your stated figure of 72 percent of downloaders using dial-up services? With respect, in practice, it is virtually impossible to download music without a broadband connection, so how do you reconcile these two figures with the actual incidence of downloading from a dial-up service?