You must have javascript enabled to view this website. Please change your browser preferences to enable javascript, and reload this page.
Using an Internet chat room to access potential respondents to a survey, a researcher worked with the chat room Web site to develop a "pop-up" that advertised the availability of the survey. Potential respondents who access the chat room for discussion about various cancer treatments were able to click on the pop-up to participate in the survey. Over a four-week period, the researcher gathered responses to his survey from over 500,000 respondents representing 17 countries. He submitted the results of the survey to a respected scientific journal and described the very large number of responses as representative of the population of individuals seeking treatment for cancer. The editors rejected his manuscript because of this claim.