The Internet's potential for academic and applied research has recently begun to be acknowledged and assessed. To date, researchers have used Web page-based surveys to study large groups of on-line users and e-mail surveys to study smaller, more homogenous on-line user groups. A relatively untapped use for the Internet is to use e-mail to survey broader Internet populations on both a national and international basis. Our experience using e-mail to study a national sample of Internet users is presented, beginning with a discussion of how a sample of on-line users can be selected using a ‘people finder’ search engine. We include an evaluation of the demographic characteristics of the respondent pool compared to both a web page-based survey and a telephone survey of Internet users. Considerations for researchers who are evaluating this method for their own studies are provided.