Many old research techniques do not adapt well for use on the Internet. The anonymity of the Internet makes it difficult to get a truly randomized, unbiased study population for an online survey.

Many researchers believe that they can design studies to monitor discussion groups “lurking” as long as they do not identify subjects in research projects.

The privacy of visitors to medical websites must be respected. Does visiting a website imply informed consent to have private information tracked?

Strict guidelines will need to be implemented to prevent insurers, employers and unscrupulous entrepreneurs from harnessing technology for profit, to the detriment of public privacy.